JP2001145312A - Electronic device incorporating power generating mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic device incorporating a power generating mechanism capable of suppressing magnetic leakage flux while not in use and preventing the erasure of magnetically recorded data on a magnetic card and the like. SOLUTION: An electronic device comprises a casing 27 having roughly the same outer shape as general-purpose cartridges and a drive shaft insertion part 28 into which the drive shafts of a drive device that drives the cartridges is inserted, and a power generating mechanism that is stored inside the casing 27 and engaged with the drive shafts 21, 23 to generate electric power utilizing their torque. A slide plate 7 of a magnetic material is provided to cover the part of the permanent magnet 25 of the power generating mechanism exposed from the drive shaft insertion part 28. While the electronic device is not in use, the slide plate 7 covers the part of the permanent magnet 25 and parts from that part when engaged with the drive device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge type electronic apparatus which can be mounted on a disk drive such as a personal computer (personal computer) or a cartridge drive such as a cassette tape drive, and more particularly, to a cartridge type electronic apparatus having a built-in power generation mechanism. Related to electronic equipment.

[0002]

2. Description of the Related Art In recent years, memory cards have become widespread as digital recording media for video and music data due to advances in semiconductor and integrated circuit technologies. As one of interface adapters for connecting the memory card to a personal computer, a floppy disk type memory card adapter (electronic processing adapter) is commercially available.

However, since this adapter has a built-in battery, it has to be replaced by use of the battery, which is troublesome. Therefore, as described in Japanese Patent Publication No. 7-500238, an electronic processing adapter incorporating a power generation mechanism that generates power by rotating by a rotation mechanism of a driving device has been proposed.

[0004]

In an electronic processing adapter incorporating the power generating mechanism, a permanent magnet is used for a rotor of the power generating mechanism. When the memory card adapter is not used, the rotor (permanent magnet) is open from the cartridge case, in other words, is exposed to the outside, and the strong magnetic flux of the permanent magnet is leaking.

Therefore, when a magnetic recording medium such as a card having a magnetic stripe such as a credit card or a magnetic disk cartridge is brought close to the rotor, data recorded on the magnetic card or the magnetic disk is destroyed by the leakage magnetic flux of the permanent magnet. Alternatively, there is a problem that the data is erased.

Therefore, in order to suppress the leakage magnetic flux, there is a method of attaching a magnetic material to the surface of the rotor (permanent magnet) of the power generating mechanism. However, a part of the magnetic flux of the rotor (permanent magnet) passes through the inside of the magnetic material. By doing so, there is a problem that the amount of magnetic flux contributing to power generation is reduced, and the generated power is reduced by about 30%.

The present invention provides an electronic device with a built-in power generation mechanism that suppresses leakage magnetic flux when not mounted on a drive device, prevents destruction or loss of magnetic recording data of a magnetic card or the like, and does not reduce power generation. It is intended to do so.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a drive shaft for a drive device having substantially the same outer shape as a general-purpose cartridge such as a 3.5-inch floppy disk, and for driving the cartridge. And a case having a drive shaft insertion portion into which is inserted, and housed in the case,
An electronic device, such as an electronic adapter, having a power generation mechanism that engages with the drive shaft and generates power using the rotational force of the drive shaft is intended.

A slide plate made of a magnetic material such as a magnetic stainless steel plate is provided to cover a portion of the permanent magnet of the power generating mechanism exposed from the drive shaft insertion portion, and when the electronic device is not mounted on the drive device, The slide plate covers the permanent magnet portion, and the electronic device is configured to be separated from the permanent magnet portion when the electronic device is mounted on the driving device.

In the electronic device of the present invention, when not used in the drive device, the permanent magnet portion of the rotor is covered with the slide plate, and the leakage magnetic flux from the permanent magnet is suppressed. Therefore, even when a magnetic recording medium such as a magnetic card or a magnetic disk cartridge is brought close to this electronic device, there is no magnetic effect due to the leakage magnetic flux, and it is possible to reliably prevent the destruction or loss of data stored in the magnetic recording medium. it can.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, an example is shown in which the present invention is applied to a memory card adapter that can be inserted into a floppy disk drive (hereinafter abbreviated as FDD). However, the present invention is applied to an adapter of another cartridge (optical disk cartridge, video tape cartridge, cassette tape cartridge, etc.). Is also possible.

FIG. 1 shows the appearance of a floppy disk cartridge type memory card adapter (hereinafter simply referred to as an adapter) according to the present invention. The adapter 2 has a memory card slot 4 into which a memory card 3 is inserted. By mounting the adapter 2 into which the memory card 3 is inserted into an FDD 1 such as a personal computer, reading and writing to the memory card 3 is enabled. The adapter 2 is provided with a shutter 5 that slides in conjunction with attachment / detachment to / from the FDD 1.

FIG. 2 shows the internal structure of the adapter and the FDD.
1 is a block diagram showing a connection relationship with a memory card 3. FIG. FDD 1 is composed of FDD motor 11 and magnetic head 1
2 is provided. The adapter 2 includes a rotor 6, a coil 8,
Magnetic head 10, modulation / demodulation circuit 13, buffer circuit 1
4, a control circuit 15, a rectifier / constant voltage circuit 16, a contact part 17 installed in the memory card slot 4 and connected to a contact part (not shown) of the memory card 3.

Next, the operation of this system will be described. FD
The magnetic signal output from the magnetic head 12 of D1 is detected by the magnetic head 10 arranged at a position facing the adapter 2 and demodulated by the modulation / demodulation circuit 13. The demodulated data is temporarily stored in the buffer circuit 14 by the control circuit 15. When the command in the data is writing, the control circuit 15 writes the data to the memory card 3 via the contact 17. In the case of reading, the control circuit 15 reads data from the memory card 3 via the contact portion 17 and temporarily stores the data in the buffer circuit 14.

Thereafter, the data is modulated by the modulation / demodulation circuit 13 and sent out from the magnetic head 10 as a magnetic signal. The magnetic signal is detected by the magnetic head 12. When the adapter 2 is mounted on the FDD 1, the rotor 6 of the generator is rotated by the FDD motor 11 and an AC voltage is generated in the coil 8. This AC voltage is rectified / constant voltage circuit 1
6 to rectify / constant voltage and supply electricity to each circuit in the adapter 2 and the like.

FIG. 3 is a schematic configuration diagram of a generator in the adapter according to the first embodiment. The coil 8 is wound around a stator yoke 9, and a rotor 6 having a permanent magnet is rotatably arranged inside the yoke 9, and a generator including the rotor 6, the coil 8, the stator yoke 9, and the like is made of synthetic resin. It is installed in the case 27.

FIG. 4 is an enlarged plan view of the generator. As shown in the drawing, the rotor 6 has a square center hole 22 into which the motor shaft 21 of the FDD motor 11 is inserted at the center and a driving pin 23 of the FDD motor 11 like the rotating hub of the 3.5-inch floppy disk. Each of the rectangular drive pin holes 24 to be inserted is provided.

An annular permanent magnet 25 is integrally joined to the outer peripheral portion of the rotor 6, and the permanent magnet 25 is magnetized in multiple poles (12 poles in this embodiment) along the circumferential direction.

A stator yoke 9 made of, for example, permalloy or amorphous is punched out in a substantially annular shape so as to surround the permanent magnet 25, and the coils 8 are wound around a large number of magnetic pole portions extending radially. A non-magnetic body 26 made of glass or the like is provided at a predetermined interval inside the stator yoke 9 facing the permanent magnet 25, and adjacent yoke portions are magnetically isolated.

The gap G between the outer periphery of the permanent magnet 25 and the inner periphery of the stator yoke 9 is held by a number of ball bearings, not shown. That is, the permanent magnet 25
Bearing grooves are formed on the outer peripheral surface of the stator yoke 9 and the inner peripheral surface of the stator yoke 9, respectively.
(0.3 mm in the present embodiment) is formed uniformly along the circumferential direction, and the permanent magnet 25 (rotor 6) is rotatably coupled (held) to the stator yoke 9.

As shown in FIGS. 3, 5, and 6, a drive shaft insertion portion 28 into which the drive shaft (motor shaft 21, drive pin 23) of the FDD motor 11 is inserted substantially in the center of the case 27. And a head insertion port 29 are formed.
The shutter 5 for opening and closing the head insertion opening 29 is slidably supported by the case 27.

The shutter 5 is made of a magnetic material such as a magnetic stainless steel plate and has a substantially U-shaped side surface.
As shown in FIGS. 5 and 6, a semicircular first end is provided at the free end of the shutter 5 on the side where the drive shaft insertion portion 28 is formed.
A slide plate 7a is integrally provided. Case 2
7, a semi-circular second slide plate 7b is slidably disposed on the first slide plate 7a so as to face the first slide plate 7a.
The second slide plate 7b is also made of a magnetic material such as a magnetic stainless steel plate.

As shown in FIG. 6, the shutter 5 and the second slide plate 7b are connected by a rotating lever 30, and an intermediate portion of the rotating lever 30 is supported by a pin 31, and
By the rotation operation of 0, the first slide plate 7a and the second slide plate 7b move toward and away from each other. Rotating lever 3
The pin 0 and the pin 31 are arranged in the case 27 so as not to hinder the sliding operation of the shutter 5.

As shown in FIG. 5, the shutter 5 is elastically urged by a torsion coil spring 30 in a direction to close the head insertion port 29. Therefore, when the adapter is not used, the head insertion port 29 is closed by the shutter 5 by the elastic force of the torsion coil spring 30, and the first slide plate 7a and the second slide plate 7b are in a state of being joined. At this time, the permanent magnet 25 includes the first slide plate 7a and the second slide plate 7b.
And the leakage of magnetic flux from the drive shaft insertion portion 28 is suppressed.

When the adapter is inserted into the FDD, the shutter 5 is moved by the shutter opening member in the FDD against the elastic force of the torsion coil spring 30, and the head insertion port 29 is opened as shown in FIG. The rotation lever 30 rotates with the movement of the shutter 5, and the first slide plate 7a and the second
The slide plates 7b are separated from each other, and the rotor 6 is completely exposed. In this state, the motor shaft 21 and the drive pin 23 of the FDD motor 11 are inserted into the center hole 22 and the drive pin hole 24 provided in the rotor 6 as shown in FIG. Power generation is performed.

FIGS. 7 and 8 show a second embodiment. In this example, both the first slide plate 7a and the second slide plate 7b are substantially semicircular, as shown in FIG. When the first slide plate 7a and the second slide plate 7b match, the drive shaft insertion portion 28 provided in the case 27 is completely closed. The functions and operations of the first slide plate 7a and the second slide plate 7b are the same as those of the first embodiment, and FIG. 8 shows a state where the drive shaft insertion portion 28 is opened.

FIG. 9 is a view showing a third embodiment. In this example, when the adapter is not used, the permanent magnet 25 is completely covered by one slide plate 7 connected to the free end of the shutter 5. Thus, the leakage of the magnetic flux is suppressed. When the adapter is used, the slide plate 7 moves together with the shutter 5 and separates from the permanent magnet 25, and the rotor 6 is exposed from the case 27.

The electronic device incorporating the power generating mechanism according to the present invention is applied to a charging device for charging a secondary battery using a generator and a small power generating device in addition to a card adapter.

[0029]

As described above, the present invention has a case having a drive shaft insertion portion into which a drive shaft of a drive device for driving the cartridge has substantially the same outer shape as a general-purpose cartridge, and a case in which the drive shaft is inserted. A power generation mechanism that is housed and engages with the drive shaft to generate electric power using the rotational force of the drive shaft, wherein the power generation mechanism exposes the permanent magnet portion of the power generation mechanism exposed from the drive shaft insertion portion. A slide plate made of a body is provided in the case, and when the electronic device is not mounted on the driving device, the portion of the permanent magnet is covered by the slide plate, and when the electronic device is mounted on the driving device, a slide is formed. The plate is configured to be separated from the portion of the permanent magnet. Therefore, the leakage magnetic flux when the electronic device is not mounted on the driving device is suppressed, and the destruction and disappearance of the magnetic recording data of the magnetic card and the like are surely prevented, and the power generation does not decrease when the electronic device is mounted on the driving device. .

[Brief description of the drawings]

FIG. 1 is a perspective view of an FDD, an adapter, and a memory card.

FIG. 2 is a block diagram showing an internal configuration of an FDD and an adapter.

FIG. 3 is a schematic configuration diagram of a generator of the adapter according to the first embodiment of the present invention.

FIG. 4 is an enlarged plan view of the generator.

FIG. 5 is a plan view showing an unused state of the adapter.

FIG. 6 is a plan view showing a state when the adapter is used.

FIG. 7 is a plan view showing an unused state of the adapter according to the second embodiment of the present invention.

FIG. 8 is a plan view showing a state when the adapter is used.

FIG. 9 is a plan view showing an unused state of the adapter according to the third embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 FDD 2 Memory card adapter 3 Memory card 4 Memory card slot 5 Shutter 6 Rotor 7 Slide plate 7a First slide plate 7b Second slide plate 8 Coil 9 Stator yoke 10 Adapter magnetic head 11 FDD motor 12 FDD magnetic head 21 Motor shaft 22 Central hole 23 Drive pin 24 Drive pin insertion hole 25 Permanent magnet 27 Case 28 Drive shaft insertion part 29 Head insertion port 30 Torsion coil spring

Claims (2)

[Claims] 1. An external storage device having substantially the same outer shape as a general-purpose cartridge,
A case having a drive shaft insertion portion into which a drive shaft of a drive device for driving the cartridge is inserted; and a power generation housed in the case and engaging with the drive shaft to generate electric power by utilizing the rotational force of the drive shaft. An electronic device having a mechanism, wherein a slide plate made of a magnetic material and covering a permanent magnet portion of the power generation mechanism exposed from the drive shaft insertion portion is slidably provided on the case, and the electronic device is not mounted on the drive device. The power generation is characterized in that the permanent magnet portion is covered by the slide plate when mounted, and the slide plate is separated from the permanent magnet portion when the electronic device is mounted on the drive device. Electronic equipment with a built-in mechanism. 2. The electronic device according to claim 1, wherein the case has substantially the same outer shape as the case of the disc cartridge, and the case is provided with a shutter for opening and closing a head insertion opening, and at least a part of the slide plate. An electronic device having a built-in power generation mechanism, wherein the power generation mechanism is connected to the shutter.