JPS63126565A - Controller for document shredder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <First Field of Use in Industry> The present invention relates to a control device around a shredded waste storage box in a document shredding machine (unredder) for shredding unnecessary documents.

Prior Art A conventional document shredding machine includes a pair of shredding blades that shred paper, an electric motor that rotates the shredding blades, and a motor that receives shredded waste shredded by the shredded blades. The storage box was stored in the lower part of the main body so that it could be taken out and taken out. Therefore, when the storage box is full of shredded waste, the storage box is taken out from the bottom of the main body and carried to another location to dispose of the shredded waste.

<Problems to be Solved by the Invention> In the above-mentioned conventional document shredding machine, when another person tries to shred the shredded paper in the storage box jlH (state), the shredding blade does not work even though there is no storage box. is driven and shreds the shredded paper, which causes the shredded waste to be scattered in the lower part of the main body, and there is a problem that the inside of the lower part of the main body must be cleaned later. 1) The control circuit of the document shredding machine is expensive and problematic, as separate sensors (switches) were used to detect the presence or absence of the storage box and to detect that the storage box was full of shredded waste. .

Second, the present invention is capable of forcibly stopping the electric motor in both the states of no signal in the storage box and in the state of shredded waste 1. The purpose is to provide an inexpensive control device that can detect the state with a single dual-purpose sensor.

Means for solving the problem 〉 The problem solving means according to the present invention is a longitudinal side view of a document shredding machine equipped with a control device as shown in FIG. A vertical sectional front view of the lower part of the main body in a full state, a side view of the main part showing the f2 state when the empty storage box in Fig. 3 is inserted into the main body in the direction of the arrow, and Fig. 1 shows the same while the storage box is being removed. As shown in the main part side view showing the state of the main part and the front view of the display section formed on the top surface of the main body in FIG. The document shredding machine includes an electric motor 3 and a storage box 5 for receiving the shredded waste 4 shredded by the shredding blade 2, and the storage box 5 is stored in the lower part of the main body A so as to be freely removable. A dual-purpose sensor 6 is connected to the drive circuit of the electric motor 3, and the dual-purpose sensor 6 has a function of detecting whether or not the storage box 5 is inside the main body and a function of detecting the fullness of shredded waste in the storage box. The storage box no signal and the shredded waste full signal are both set as the same signal, and the dual-purpose sensor 6 is connected to the drive circuit of the motor 3 so that the same signal causes the motor 3 to be forcibly stopped. be.

<Operation> In the above problem solving means, as shown in FIG.
The upper edge 5a of the side wall of the storage box 5
When the saw is full, the optical axis from the emitter I8 is cut off, so the receiver 19 is turned off, and the dual-purpose sensor 6 outputs a shredded waste full signal, which causes the electric motor 3 to
The drive circuit of is turned off, and the shredding blade 2 is switched to a halt.

Next, as shown in FIG. 4, when the storage box 5 is pulled in the direction of the arrow, the light shielding plate 21 moves from the non-light shielding position 21B in FIG. 3 to the light shielding position 21A in FIG. It rotates so as to block the optical axis of the projector 18, and the light receiver 19 is turned off, so the dual-purpose sensor 6 outputs a no signal for the storage box, and the electric motor 3 and shredding blade 2 remain stopped.

In this manner, the dual-purpose sensor 6 works to forcibly stop the electric motor in both the state where the storage box is empty and the state where the shredded waste is full, thereby preventing the scattering of shredded waste from the main body.

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

FIG. 1 is a vertical sectional side view of a document shredding machine equipped with a control device of the present invention, and as shown in the figure, the control device of the present invention can
a pair of thin 1rr staggered shredding blades 2; a condenser run type electric motor 3 for rotating the shredding blades 2;
and a storage box 5 for receiving shredded waste 4,
The storage box 5 is a document shredding machine that is stored in the lower part of the main body A so that it can be taken out and put in. A dual-purpose sensor 6 is connected to the drive circuit of the electric motor 3, and the dual-purpose sensor 6 detects whether or not the storage box 5 is inside the main body. The dual-purpose sensor 6 also has the function of detecting that the storage box is full of shredded scraps, and the dual-purpose sensor 6 has the same signal as the no-signal of the storage box and the signal that the shredded scraps are full. , the dual-purpose sensor 6 is connected to the drive circuit of the electric motor 3 through (or without) a microcomputer control circuit so as to forcibly stop the electric motor +a3.

7 is an automatic paper feeder located at the top of the main body;
A shredded paper mounting table 8, a pair of drive rollers 9.10,
A feeding belt 1.1 is wound around this, and the belt 11
The shredded sheets stacked on a device stand 8 comprising a regulating roller 12 disposed above are fed into the shredding blade 2 in predetermined amounts (for example, 20 sheets) in order from the lowest sheet. 13 is a manual paper feed section, which is a paper feed [-, TI 1
When there is a small amount of shredded paper or shredded paper that needs to be processed urgently, the cover 15 is opened and the shredded paper is transferred to the paper feed slot 1.
If you manually feed it into 4, it will be shredded. 17 is the exit of storage box 5 (
, a door for entry.

The shredding capacity of the shredding blade 2 is 50 g/m 2 and approximately 20 sheets of paper. In other words, the distance between the feed belt 11 and the regulating roller 12 is adjusted so that more than 20 sheets of paper do not pass through. Also, the interval between the guide plates 16a and 16b is adjusted so that more than 20 guide plates do not pass through.

FIG. 2 is a longitudinal sectional front view of the lower part of the main body when the storage box 5 is full of shredded waste 4. As shown in the figure, the dual-purpose sensor 6 includes a light emitter 18 (for example, a light emitting diode) disposed slightly above the upper edge 5a of both side walls of the storage box 5, a light receiver 19 (for example, a phototransistor), and a light receiver 19 (for example, a phototransistor). 1
8 (or light receiving 519), and a light shielding plate 21 supported by the main body A by a support shaft 20 so as to freely switch between light shielding and non-shading. When the box 5 is full, rising above the upper edge 5a of the side wall, the light shielding plate 21 blocks the optical axis from the projector 18, so the light receiver 19 is turned off and the dual-purpose sensor 6 outputs a shredded waste full signal. Therefore, the drive circuit of the electric motor 3 is turned off and the shredding blade 2 is switched to a halt based on the signal.

FIG. 3 is a side view of the main part showing a state in which the empty storage box 5 is inserted into the main body in the direction of the arrow. When the storage box 5 is inserted as shown in the figure, the light shielding 41221 is attached to the upper edge 5a of the side wall of the storage box 5. It is pushed and rotates about the support shaft 20 from its light-shielding position 21A to its non-light-shielding position 21E3. Non-shading posture 2 of this light shielding plate 21
At 1B, the light from the projector 18 is received by the light receivers 'a and 19, and the dual-purpose sensor 6 outputs the storage box presence signal, so the electric motor 3 and the shredding blade 2 perform normal rotational operations.

FIG. 4 is a side view of the main part showing the state in the middle of taking out the storage box 5, and when the storage box 5 is pulled in the direction of the arrow, the light shielding plate 2 [ changes from the non-light shielding position 21B of FIG. 3 to the state shown in FIG. It rotates under its own weight around the support shaft 20 in the light-shielding position 21A, so that it blocks the optical axis of the emitter 18, and the light receiver 19 is turned off.
The dual-purpose sensor 6 outputs a signal indicating that there is no storage box, and the electric motor 3 and the shredding blade 2 stop.

FIG. 5 is a front view of the display section formed on the top surface of the main body. In the figure, 22 is a full indicator lamp, 23 is a shredding blade start switch button constituting the control device, 24 is a shredding blade stop switch button, 25 is a shredding blade stop indicator lamp, 26
is the shredding blade operation indicator lamp. The full display lamp 22 is turned on to notify the user when the dual-purpose sensor 6 outputs a signal indicating that the shredded waste is full and there is no signal in the storage box. In this state, even if the start switch button 23 is pressed, the shredding blade 2 is not driven.

Next, the operation will be explained. When the storage box 5 shown in FIG. 1 is set in the main body A, when the user presses the start switch button 23, the light shielding plate 21 is in the non-light shielding position 21B.
When the light from the projector 18 enters the light receiver 19, the electric motor 3 and the shredding blade 2 are driven by the control device, the shredded paper l is shredded, and the shredded waste 4 is stored in the storage box 5.

Then, as shown in FIG.
When the storage box 5 is full, raised to the upper edge 5a of the side wall of the storage box 5, it blocks the optical axis from the projector 18, so the receiver 19 is turned off and the dual-purpose sensor 6 outputs a shredded waste full signal. Therefore, the signal causes the drive circuit of the electric motor 3 to be turned off and the shredding blade 2 to be stopped.

Next, as shown in FIG. 4, when the storage box 5 is pulled in the direction of the arrow, the light shielding plate 21 moves from the non-light shielding position 21R to the fourth position (see FIG. 3).
It rotates by its own weight around the support shaft 20 in the light-shielding position 2+A shown in the figure,
Since the optical axis of the emitter 18 is blocked and the receiver 19 is turned off, the dual-purpose sensor 6 outputs a signal indicating that there is no signal for the storage box.
The electric motor 3 and the shredding blade 2 remain stopped.

After discarding the shredded waste 4 in the storage box 5, either set the empty storage box 5 again in the main body A as shown in FIG. Support shaft 2 pushed by 5a
0 as a fulcrum and its light-shielding posture 21A to non-shading posture 211
Rotate to 3. In the non-shading position 21B of the light shielding plate 21, the light from the projector 18 is received by the light receiver 19, and the dual-purpose sensor 6 outputs the storage box presence signal, so the electric motor 3 and the shredding blade 2 are in a state where they can perform normal rotational operation. becomes. In other words,
Pressing the start switch button 23 performs normal document shredding.

It should be noted that the present invention is not limited to the embodiments described above, and it goes without saying that many modifications and changes can be made to the bipedal embodiments within the scope of the present invention.

<Effects of the Invention> As is clear from the explanation in section 2 below, according to the present invention, in a full state where the top of the shredded waste in the storage box rises above the upper edge of the side wall of the storage box, the dual-purpose sensor becomes thin. It will output a signal full of chips, so the signal will turn off the motor drive circuit and stop the shredding blade. Next, when the storage box is pulled out, the dual-purpose sensor outputs the same signal as the shredded waste full signal and the storage box no signal, so the electric motor and shredding blade remain stopped.

In this way, in the present invention, due to the function of the dual-purpose sensor,
The electric motor can be forcibly stopped in both the state where the storage box is empty and the state where the shredded waste is full, thereby preventing the scattering of shredded waste from the main body, and both these states can be detected with a single sensor. This has the excellent effect of providing an inexpensive control device.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal side view of a document shredding machine equipped with the control device of the present invention, Fig. 2 is a longitudinal sectional front view of the lower part of the main body with the storage box full of shredded waste, and Fig. 3 is A side view of the main parts showing a state in which an empty storage box is similarly inserted into the main body in the direction of the arrow,
FIG. 4 is a side view of the main part showing the state in which the storage box is being taken out, and FIG. 5 is a front view of the display section formed on the "-" surface of the main body. l: Shredded paper, 2: Shredded blade, 3: Electric motor, 4. Shredded waste,
5: Storage box, 6. Dual-purpose sensor, 18: Floodlight, I9:
Light receiver, 20: Support shaft, 21: Light-shielding plate, 21A: Light-shielding position, 21B: Non-light-shielding position, A: Main body.

Claims (1)

[Claims] It is equipped with a shredding blade for shredding shredded paper, an electric motor for rotating the shredding blade, and a storage box for receiving the shredded waste shredded by the shredding blade, and the storage box is located at the bottom of the main body. In the document shredding machine that is stored in a removable manner, a dual-purpose sensor is connected to the drive circuit of the electric motor, and the dual-purpose sensor has a function of detecting the presence or absence of a storage box in the main body and a function of detecting that the storage box is full of shredded waste. Document details characterized in that the dual-purpose sensor is configured to make the storage box no signal and the shredded waste full signal the same signal, and forcibly stop the electric motor with the same signal. Cutting machine control device.