JPH0468681B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to improvements in self-propelled auxiliary equipment for disc-shaped record carriers, such as self-propelled record cleaners and static eliminators for record discs, and in particular, When the user releases his or her finger from a switch operating section provided on the device, drive sections such as self-propelled running wheels and a static eliminator start driving.

[Conventional technology]

BACKGROUND ART Self-propelled types equipped with running wheels have been proposed as record cleaners for removing dust adhering to record discs and static eliminators for neutralizing and removing static electricity generated on record discs.

FIG. 1 shows a perspective view of a conventional static eliminator of this kind, in which a running wheel (not shown) is provided at the bottom of the static eliminator A, and the static eliminator A is mounted on a record disc B. When set and press the button switch, the drive parts such as the motor and discharge part will start operating immediately.
The running wheels are driven and rotate on their own over the record disc while removing static electricity.

[Problem that the invention seeks to solve]

However, since such conventional devices start self-propelled rotation at the same time when the button switch is pressed with a finger, the static eliminator A remains under the load applied by the finger until the finger is released from the button switch. This causes a large amount of rotational friction between the circumferential surface of the running wheels and the surface of the record disc, damaging the surface of the record disc, especially the label part, and adding unnecessary load to the motor. This not only increases power consumption, but also has drawbacks such as the record disc becoming curved and deformed due to the load exerted by the fingers.

[Means to solve the problem]

Therefore, the present invention has been made for the purpose of providing a self-propelled auxiliary device for disc-shaped record carriers such as records, which is equipped with a switch device that eliminates the drawbacks of the conventional ones. A switch operation part is provided on the outer surface of the main body of a self-propelled auxiliary equipment that is driven and used on a disc-shaped record carrier, such as a disc static remover, etc., and the switch operation part is installed on the outer surface of the main body of the self-propelled auxiliary equipment, such as a record disc static eliminator, etc., and performs a predetermined work while self-propelled and rotates on the disc. For self-propelled auxiliary equipment for disc-shaped record carriers, a switch operation part provided on the outer surface of the main body.
SWO, a switch SW that outputs an inversion signal according to the operation state when the operation part SWO is touched with a finger and the release state when the subsequent touch operation is released, and the output of the inversion signal. This is a self-propelled auxiliary device for a disc-shaped record carrier, which is equipped with a control section 3 composed of reversal detection circuits F and F that issue drive signals to drive sections 8, 9, 11, M, and _D1 .

〔Example〕

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

In Fig. 2, 1 is a power supply section (6V),
A control unit 3 is connected via a low-pass filter 2 consisting of a protective resistor R ₁ and a capacitor C ₁ . This control section 3 is equipped with flip-flop circuits F and F as, for example, inversion detection circuits, and a control signal is inputted to the flip-flop circuits F and F from a NAND circuit 4, and the input terminal of the NAND circuit 4 is connected to a resistor R. It is connected to the power supply unit 1 via resistor R ₃ and capacitor C ₂ , and to the 0 line via resistor R ₃ and capacitor C 2 , and a switch _SW is connected in parallel with capacitor C ₂ . This switch
The switch operating section SWO that operates the SW is provided on the outer surface such as the top or side surface of the main body of the static eliminator or record cleaner. A reversal signal is output according to the release state when the contact operation that continues with the contact operation is released. In this way, the control section 3 controls the inversion detection circuits F, F and the switch.
It consists of SW and switch operation unit SWO.

A set of flip-flop circuits F, F
One input terminal 5 ₁ , 6 ₁ of each of the NAND circuits 5 , 6
are connected through differential capacitors C ₃ and C ₄ , respectively.
It is connected to the NAND circuit 4, and its state is inverted when a negative trigger pulse is input.
The other input terminals 5 ₂ and 6 ₂ are connected to the output terminals 6 ₃ and 5 ₃ of the other party, respectively, and the output terminal 6 ₃ is connected to the NAND circuit 7 and the lower NAND circuit 6, respectively.
It is connected to the high voltage generation circuit 8 via transistors Q ₁ and Q ₂ . _C5 is a starting capacitor, and is directly connected to the input terminal ₆₁ of the NAND circuit 6.
It is also connected to the output terminal 6 ₃ via a resistor R ₆ .

The high voltage generation circuit 8 consists of a transistor Q ₃ , a primary coil L ₁ , a secondary coil L ₂ , a feedback coil L ₃ , etc. One end of each coil L ₁ , L ₂ , L _{3 is connected to the positive line, and one end of the coil L 3} is connected to the positive line and The other end of the secondary coil _L2 is connected to the needle-like electrode ₉₁ of the discharge section 9, and when a high voltage is applied to the needle-like electrode ₉₁ , a corona discharge is generated between it and the cathode ₉₂ . Further, a light emitting diode D ₁ and a motor M are connected in parallel with the transistor Q ₃ , and the motor M is connected to the running wheel 11 via a speed reducer 10 .
are connected.

This apparatus has the above-mentioned configuration, and its operation will be explained next with reference to FIG. In addition,
FIG. 3 a, b, p, and q represent voltage waveforms at points A, B, P, and Q in FIG. 2, respectively.

When the switch SW is off, the capacitor _C2 is charged by the power supply section 1, so the point A is at a high level and the point B is at a low level. Also,
Since the output terminal of the NAND circuit 6 is connected to the power supply section 1 via the resistors R ₆ and R ₇ , the point P is at a high level, and the point Q is inverted by the NAND circuit 7, so it is held at a low level. Therefore the transistor
Q ₁ and Q ₂ are in a cut-off state, and the high voltage generating circuit 8, light emitting diode D ₁ and motor M have stopped driving.

Next, press the switch operation section SWO to activate the switch.
When the SW contact is closed, it is in the operating state and the capacitor
_C2 is discharged, the power supply current is bypassed by the switch SW and flows to the 0 line, and point A becomes low level instantly. Therefore, the point B is inverted by the NAND circuit 4 and becomes a high level, and the rising voltage is differentiated by the capacitors C ₃ and C ₄ and sent as a positive trigger pulse to the input terminal 5 ₁ of each one of the NAND circuits 5 and 6. , 6 ₁ , but since this trigger pulse is positive, the flip-flop circuit F,
F is not reversed and maintains its previous state, so that the high voltage generating circuit 8, light emitting diode _D1 , and motor M maintain their stopped states.

Next, when the switch SW is released from the operating state by releasing the finger from the switch operating section SWO, the contact of the switch SW is opened and the switch SW is released, and the capacitor _C2 is charged again and the point A is The state changes from low level to high level, switch S outputs an inverted signal, and point B also inverts from high level to low level. Then, the falling voltage is differentiated by the capacitors C ₃ and C ₄ and inputted to the respective input terminals 5 ₁ and 6 1 of both NAND circuits 5 and ₆ as a negative trigger pulse. Therefore, the flip-flop circuits F and F of the control section 3 are inverted, and the point P
changes from high level to low level. Then,
A high-level drive signal is output at point Q, the Darlington-connected transistors Q ₁ and Q ₂ are driven to conduction, and the high voltage generation circuit 8 is driven to connect the needle electrode 9.
_A high voltage is applied to the discharge section 9 through corona discharge. At the same time, a light emitting diode
D ₁ lights up to indicate that the recorder is in operation, and the motor M also starts operating, the running wheels 11 are driven, and the static eliminator performs static electricity removal work while rotating on its own over the record.

Incidentally, if the rotating brush 12 is connected to the motor M, dust adhering to the record can also be removed.

In this way, the self-propelled auxiliary equipment according to the present invention is not limited to those used on record discs, such as record static eliminators and record record cleaners, but is also applicable to disc-shaped records such as disk discs on which information is recorded. It can be applied to a wide range of carriers, and also includes devices that incorporate a static eliminator and cleaner into one body, and other devices such as lighting devices that are used while running on a panel surface.

Further, in the above embodiment, the switch of the switch device
Although a push-type mechanical switch is used for the SW and switch operation unit SWO, a touch switch can also be used.Furthermore, without using an electronic element consisting of flip-flop circuits F and F, the switch device itself can be pressed after being pressed. It is also possible to construct it directly with a push-type mechanical switch, which is turned on by releasing the pressure.

〔effect〕

As explained above, according to the present invention, the switch operation unit SWO provided on the outer surface of the main body of the self-propelled auxiliary equipment for a disc-shaped record carrier that performs a predetermined work while self-propelled on the board; A self-propelled auxiliary device for a disc-shaped record carrier that performs a predetermined work while self-propelled and rotates, a switch operation unit SWO provided on the outer surface of the main body,
A switch SW outputs an inversion signal in accordance with the operation state when the operation unit SWO is touched by a finger and the release state when the subsequent touch operation is released, and the drive unit 8 ，
Since it is equipped with a control unit 3 consisting of reversal detection circuits F and F that issue drive signals to 9, 11, M, and D ₁ , the record cleaner and record static eliminator are automatically activated while the switch operation unit SWO is operated. There is no need to start running or turning, and therefore the surface of a disc-shaped record carrier such as a record is not damaged by the rotational friction of the running wheels 11, nor is it distorted by the pressing force of a finger.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional static eliminator, FIG. 2 is an electric circuit diagram of an embodiment of the present invention, and FIG. 3 is a voltage waveform diagram. 8... High voltage generation circuit, 9... Discharge section, 11...
Running wheel, 12...rotating brush, M...motor,
D ₁ ... Light emitting diode.

Claims (1)

[Scope of Claims] 1. A self-propelled auxiliary device for a disc-shaped record carrier that performs a predetermined work while self-propelled on a board, comprising: a switch operating unit SWO provided on the outer surface of the main body; and this operating unit SWO. a switch SW that outputs an inversion signal in accordance with the operation state when the finger is touched with the finger and the release state when the subsequent touch operation is released;
Reversal detection circuits F and F that issue drive signals to M and _D1
A self-propelled auxiliary device for a disc-shaped record carrier, comprising a control unit 3 consisting of;