JPH10263426A - Shredder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate erroneous operation troubles of a dust sensor and lessen the volume of finely shredded dust with a simple mechanism by installing the dust sensor to detect whether a dust storage box is filled with the finely shredded dust or not and a cleaning means for the dust sensor to constantly clean the dust sensor. SOLUTION: A dust sensor 56 to detect finely shredded dust D is installed in the finely shredded dust as near as possible and the height of the heap of the dust at the time of full dust is stabilized. When shredding work is carried out and the finely shredded dust reaches a fan mechanism 50, a dust leveling work is also carried out. When the dust sensor 56 detects the finely shredded dust D, the finely shredding work and the dust leveling work are stopped. At this time, a dust storage box 32 is filled with the finely shredded dust D. A static electricity eliminating brush 72 which is a cleaning means for the dust sensor 56 is so installed as to be brought into contact with a light projecting part of the dust sensor 56. The static electricity eliminating bush 72 installed in the installation plate 74 is rotated by the rotation at a rotation axis 51. The light projecting part of the dust sensor 56 is constantly brought into contact with the brush and cleaned by the rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a shredder for shredding waste paper and the like, and more particularly to a shredder capable of efficiently storing shredded shredder in a shredder storage box. And shredder that eliminates various problems caused by paper and paper powder.

[0002]

2. Description of the Related Art Conventionally, in a shredder, shredded waste such as shredded waste paper is dropped and stored in a waste storage box provided below a cutting portion formed by a cutting blade. The shredded dust is bulky because it is a shredded piece of paper, and even when a relatively small amount of discarded paper is shredded, the dust storage box is often full. It was necessary to repeat the operation of discarding the chips and again storing the chip storage box inside the shredder. In order to reduce such trouble, proposals have been made to compress the shreds falling into the waste storage box, reduce the volume of the shreds, and increase the amount of shredder stored in the waste storage box. (Japanese Utility Model Laid-Open No. 3-75843, Japanese Utility Model Laid-Open No. 3-109656, etc.).

When the shredder is compressed using the above-described compression means, there is an advantage in that the shredder is compressed and the amount of the shredder is increased. A mechanism and a sensor means for preventing over-compression are required, and the number of parts increases accordingly.

[0004]

Accordingly, the applicant of the present invention has proposed a base plate provided around the inner center of a shredder side plate, an upper space formed above the base plate, and a lower portion below the base plate. , A cutting portion provided in the upper space and provided with a shredding blade for shredding waste paper and the like, and debris installed in the lower space and containing the shredded debris In a shredder having a storage box and a door provided in front of the lower space, a waste leveling means is rotatably mounted above the waste storage box, and when the door is closed, the waste storage box is raised upward. The shredder is moved so that the upper edge of the waste container abuts against the lower surface of the base plate so that the shredder does not fall out of the waste container during the leveling operation by the leveling means. Proposal of a chip leveling device (Japanese Patent Laid-Open No. 5-29) 655 JP).

However, in the above proposal, since the dust box is moved up and down in conjunction with opening and closing of the door, it is necessary to apply force against the weight of the dust box and the shredder when opening and closing the door. However, there is a drawback that the user is forced to do extra work.

[0006] In order to solve the above-mentioned difficulties, the present applicant further proposes a shredding section provided with a shredding blade for shredding waste paper and the like, and a shredding chip shredded by the shredding section. A dust storage box for storing the dust storage box, an openable / closable door for taking out the waste storage box, a dust leveling means rotatably and vertically mounted above the waste storage box, and the waste leveling means Movement stopping means for stopping movement of the means to the upper standby position and the lower waste leveling position, respectively, to reduce the bulk of the shredded waste and increase the storage capacity of the waste storage box by a relatively simple mechanism. (Japanese Patent Application No. Hei 7-281362) has proposed a shredder shredded dust leveling device capable of easily removing and storing a dust container.
issue).

[0007] The shredder shredder smoothing device of the second proposal has a function to achieve the intended purpose, such as reducing the volume of the thin section, but when the frequency of use increases, Paper dust adheres to the light emitting part of the dust sensor, causing malfunctions such as detecting that the dust is full even though the dust is not accumulated.Furthermore, the distance of the dust sensor changes and the height of the dust pile varies. Scratch and waste removal means (fan mechanism, etc.)
There is a danger that the shredded dust will cling to the drive motor and lock it, causing the motor to burn out, or the fan to fall, making it impossible to remove the dust, and the dust removal means (fan mechanism, etc.) As a result, there arises a new problem that fine fragments adhere to the ring and blades of the dust leveling fan and the dust leveling effect is reduced.

The present invention has been made in view of the above-mentioned problems of the prior art, and the dust sensor is constantly cleaned, and no paper dust or the like adheres to the dust sensor. There is no malfunction such as detecting "full", and the trouble that the height of the waste sensor is changed due to the change of the waste sensor distance is eliminated, the waste mountain height becomes uniform, and a simple mechanism As a result, the bulk of the shredded waste can be reduced to increase the storage capacity of the waste storage box, and the removal and storage of the waste storage box can be easily performed, so that the waste leveling effect can be sufficiently exhibited. The purpose is to provide a shredder.

[0009]

In order to solve the above-mentioned problems, a shredder of the present invention has a shredding portion provided with a shredding blade for shredding waste paper and the like, and is shredded by the shredding portion. A dust storage box for storing the shredded waste, an openable and closable door for taking out the waste storage box, a waste leveling means rotatably and vertically mounted above the waste storage box, Movement stopping means for stopping movement of the waste leveling means to an upper standby position and a lower waste leveling position, respectively; and the waste storage box for detecting whether or not the waste storage box is full of shredded waste. And a dust sensor provided at a position above the dust sensor and cleaning means for the dust sensor that constantly cleans the dust sensor.

[0010] By providing the dust sensor cleaning means, the dust sensor is constantly cleaned, paper dust and the like do not adhere to the dust sensor, and it is possible to detect that "dust is full" even though no dust is accumulated. There is an advantage that the malfunction does not occur and the distance of the waste sensor does not change, so that the height of the waste pile becomes uniform without variation.

It is preferable to use a reflection type dust sensor having a light projecting portion as the dust sensor, and the dust sensor cleaning means is provided so as to contact and clean the light projecting portion of the dust sensor. The use of the static elimination brush for the dust sensor has an advantage that the adhesion of paper powder or the like due to the electrostatic charge can be avoided.

If cleaning means for dust leveling means for constantly cleaning the dust leveling means is further provided,
It is possible to prevent the attachment of small pieces to the waste leveling means,
In particular, if a static elimination brush for the dust leveling means provided in contact with the dust leveling means as the cleaning means for the dust leveling means, the static electricity generated in the dust leveling means can be easily removed. The occurrence of troubles such as the adhesion of fine fragments caused by the static charge of the dust leveling means is eliminated.

A fan sensor provided above the dust leveling means for detecting the presence or absence of the dust leveling means; and a fan sensor cleaning means for constantly cleaning the fan sensor; If it is configured to always count the rotation of the waste leveling means, and if the waste leveling means is locked, the warning lamp of the operation switch flashes to shut off the power and stop the shredding work, Safety can be ensured, and a decrease in the function of the fan sensor can be prevented.

A reflection type fan sensor having a light emitting portion is preferably used as the fan sensor, and a fan sensor provided so as to contact and clean the light emitting portion of the fan sensor is used as the fan sensor cleaning means. It is preferable to use a static elimination brush.

The above three cleaning means, ie, the cleaning means for the dust sensor, the cleaning means for the dust leveling means, and the cleaning means for the fan sensor,
Needless to say, it is most effective to install the cleaning means at the same time, but it is needless to say that the respective effects can be achieved even if the respective cleaning means are used alone or in appropriate combination of two types. Absent.

The movement stopping means is linked with opening and closing of the door, and when the door is opened, the dust leveling means stops moving to the upper standby position and the dust container can be taken out. When the door is closed, If the dust leveling means is configured to stop moving to the lower dust leveling position and allow the leveling operation of the shredded debris in the waste storage box, when the door is opened, the removal of the waste storage box, There is an advantage that storage can be performed freely, and when the door is closed, the scraping work can be automatically performed.

Further, a movable base plate is provided in the inner space of the shredder which is vertically movable and is always urged upward by an urging means. The dust leveling means is connected to the movable base plate, and is pressed against the door. When the door is closed, the movable base plate is pushed down by the operation of the pushing down means, and the dust leveling means is pushed down to the dust leveling position, while when the door is opened, the pushing down means is provided. The movable base plate and the dust leveling means are returned to the upper standby position by the urging means, and the cleaning means for the dust leveling means is removed. If the dust leveling means is attached to the movable base and is always cleaned by the cleaning means for the dust leveling means, the vertical movement of the dust leveling means in conjunction with opening and closing of the door Can be smoothly carried out, also, it shredded debris by cleaning by the cleaning means is removed,
If static electricity generated in the dust leveling means is eliminated by the static elimination brush, there is no adhesion of the shredded debris to the dust leveling means.

As the dust leveling means, a fan mechanism having one or more blades is preferably used.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 12 denotes a shredder for shredding waste paper P and the like. The shredder 12
Is formed in a box-like body composed of a bottom plate 12a, a side plate 12b, and an upper lid plate 12c, and a door 12d is provided at the front part so as to be openable and closable. A base plate 14 is attached to an inner central peripheral portion of the shredder 12.

The inside of the shredder 12 is divided into an upper space 13 located above the base plate 14 and a lower space 15 located below the base plate 14. The upper space 13 is provided with a pair of vertical cutters 16, 16 and a shredding portion 20 including a horizontal cutter 18 provided below the vertical cutters 16, 16.

Reference numeral 22 denotes a motor for driving the shredding section 20. The motor 22 is provided on a substrate 24. Reference numeral 26 denotes a dust-proof cover that covers the motor 22. Reference numeral 28 denotes a control box in which a control mechanism for controlling the driving of the shredder 12 is housed, and is also covered with a dustproof cover 30.

In the lower space 15 of the shredder 12, a waste container 32 is disposed on the bottom plate 12a so as to be able to be taken out. Reference numeral 33 denotes a scattering prevention frame which is attached so as to cover the entire lower surface of the base plate 14 and acts so as to prevent the shredder D from scattering and falling from the waste storage box.

In FIG. 1 and FIG. 2, reference numeral 34 denotes a movable base plate which is vertically movable in the internal space of the shredder 12. A known mechanism may be applied as a structure for vertically moving the movable base plate 34.

In the example shown in FIGS. 1 and 2, the side plate 12b
A guide rail 38 is fixed to a substrate 36 mounted on the movable base plate 34, while a slide rail 42 is mounted on the movable base plate 34 via a mounting base 40.

The slide rail 42 is connected to the guide rail 3
8, the slide rail 42 is slidable in the vertical direction, so that the movable base plate 34 attached to the slide rail 42 is attached to the side plate 12b so as to be vertically movable. It will be.

Reference numeral 44 denotes a shaft whose upper end is fixed to the base plate 14. The lower portion of the shaft 44 is a free end, and is loosely inserted into an insertion hole 46 formed in the mounting base 40. A spring 48 is wound around the shaft 44. The spring 48 is configured to urge upward when compressed downward.

The structure in which the spring 48 is pressed downward is provided with an extension on the side of the movable base plate 34 and the shaft 4.
4 through which a shaft 44 is inserted.
And the upper end of the spring 48 is
When the movable base plate 34 moves downward while contacting the lower surface of the spring 4, the spring 48 may be pressed downward and compressed.

1 and 2, reference numeral 50 denotes a fan mechanism provided with one or more blades 50a to 50d on a rotating shaft 51, and is a leveling means that functions to level out the shreds. Reference numeral 52 denotes a motor that rotationally drives the fan mechanism 50, and a support plate 5 attached to the movable base plate 34.
4.

Reference numeral 56 denotes a dust sensor for sensing the shreds D. The attachment position of the dust sensor 56 is preferably provided as close to the shredder as possible, and by shortening the detection distance, the height of the pile of dust when the dust is full can be stabilized. Reference numeral 58 denotes a fan sensor that detects whether the fan mechanism 50 is present and detects whether the fan mechanism 50 is rotating when it should rotate.

The fan sensor 58 always counts the rotation of the fan mechanism 50. When the fan mechanism 50 is locked or when the movement of the fan mechanism 50 cannot be detected, an operation switch (not shown) is operated. Turn off the power by flashing the warning lamp and stop the operation.
There is no particular limitation on the detection mechanism of the dust sensor 56 and the fan sensor 58, but a reflection type sensor having a light projecting unit is preferably used.

The number of blades 50a to 50d attached to the fan mechanism 50 may be one or more, and is not particularly limited, but is preferably four. The wings 50
The shapes a to 50d need only have the function of leveling the shreds D, and are not particularly limited. However, as shown in FIG. 5, the efficiency of the leveling action is improved by using blades having a downwardly inclined shape.
In addition, guard members (not shown) can be attached to the blades 50a to 50d to prevent danger.

Reference numeral 60 denotes a push-down block serving as push-down means attached to the inner surface of the door 12d. The push-up block has a long flat surface 61a on the upper surface side and a short flat surface 61c on the lower surface via an inclined surface 61b. The side surface is formed in a substantially trapezoidal wedge shape (FIG. 3). The push-down block 60 has a tip protrusion 60.
a is installed at a position where it can enter the gap between the lower surface of the base plate 14 and the upper surface of the movable base plate 34.

When the door 12d is closed, the pressing block 6
0 penetrates between the base plate 14 and the movable base plate 34 and acts to push the movable base plate 34 downward (FIG. 4). Reference numeral 62 denotes a bearing.
Is mounted via a bearing block 64 to a side surface 34a facing the door 12d. The bearing 62 functions so that the movable base plate 34 can be smoothly pushed down by the pushing block 60.

The pressing block 60 is mounted on the movable base plate 3.
When the bearing 62 advances in four directions, the bearing 62 rotates down along the slope 61b and reaches the short flat surface 61c on the lower surface side (FIG. 4). With the bearing 62 located on the short flat surface 61c, the movable base plate 34 has reached the lowest position, and the dust leveling means 50 is located at the dust leveling position (FIG. 4).

When the push-down block 60 is retracted, the movable base plate 34 is in the highest position in contact with the lower surface of the base plate 14, and the dust leveling means 50 is in the upper standby position. (FIG. 3).

Reference numeral 66 denotes a cushion member having elasticity attached to the lower surface of the base plate 14. The movable base plate 34 is attached to the base plate 14 when the movable base plate 34 moves upward by the force of a spring 48. It acts to reduce the impact when the plate 34 comes into contact (FIGS. 3 and 4).

Reference numeral 68 denotes a dust leveling means provided downward at the edge of the movable base plate 34, that is, a static elimination brush serving as a cleaning means for the blades 50a to 50d of the fan mechanism 50. . When the blades 50a to 50d of the fan mechanism 50 rotate, the blades 50a to 50d of the fan mechanism 50 come into contact with the charge removing brush 34 and the static electricity generated and charged in the blades 50a to 50d of the fan mechanism 50 is removed by the charge removal brush 34. Therefore, troubles such as small fragments adhering to the blades 50a to 50d of the fan mechanism 50 are eliminated, and the dust leveling effect is sufficiently exhibited.

Reference numeral 70 denotes the blades 50a to 50a of the fan mechanism 50.
This is a static elimination brush serving as a cleaning unit for the fan sensor 58 provided close to and above the rotation shaft 51 of 0d. Blades 50a to 50d of the fan mechanism 50
As the fan rotates, the fan sensor static elimination brush 70 cleans the light projecting portion of the fan sensor 58 and acts so that the detection capability of the fan sensor 58 does not decrease.

Numeral 72 denotes a neutralizing brush serving as a cleaning means for the dust sensor, and is provided upward on a mounting plate 74 provided to rotate synchronously with the rotation shaft 51 of the fan mechanism 50. A shaft pulley 76 is attached to the rotation shaft 51, and a support shaft 78 is provided to extend downward from the movable base plate 34. A shaft pulley 80 is attached to the shaft 78 so as to correspond to the shaft pulley 76.

Reference numeral 82 denotes a pulley belt, which is suspended via the shaft pulley 76 and the support shaft pulley 80, and serves to transmit the rotation of the rotary shaft 51 to the support shaft 78. The mounting plate 74 is fixed to the upper surface of the spindle pulley 80, and the charge removing brush 7 for the dust sensor is mounted on the mounting plate 74.
2 is installed.

Accordingly, with the rotation of the rotary shaft 51, that is, the rotation of the fan mechanism 50, the support shaft pulley 80 and the mounting plate 74 rotate via the shaft pulley 76 and the pulley belt 82, and the dust provided on the mounting plate 74 is removed. The sensor neutralizing brush 72 also rotates. Since the dust removing brush 72 for dust sensor is provided so as to be in contact with the light projecting portion of the dust sensor 56, it operates to constantly contact and clean the light projecting portion of the dust sensor 56 by its rotation.

The operation of the above configuration will be described. Shreds D such as waste paper shredded by the shredder 20 of the shredder 12 fall and accumulate in a dust storage box 32 installed below the shredder 20.

The above-mentioned waste leveling means, that is, the fan mechanism 5
The use mode of 0 is not uniform, and various uses are possible. For example, at the same time as the start of shredding of waste paper,
0 is also rotated, and the fan mechanism 50 is stopped at the same time as the end of the shredding.

In this case, the shreds shredded by the shredding section 20 fall downward from between the blades 50a to 50d of the fan mechanism 50 and are housed in the shredder box. This falling state is
As the blades 50a to 50d rotate, the blades are uniformly dropped into the waste storage box.

Further, a large amount of shreds is generated and the fan mechanism 5
When the blade reaches the position of 0, the shreds D are made uniform by the rotation of the blades 50a to 50d. When the dust sensor 56 detects the shredder D, the dust box 32 is taken out. After the shredding operation is stopped, the fan mechanism 5
It is preferable to rotate 0 for a short time to perform the last scraping operation.

As shown in FIG. 4, when the door 12d is closed, the movable base plate 34 moves downward by the action of the push-down block 60, and the fan mechanism 50 connected to the movable base plate 34, The leveling means is the waste storage box 32
It descends to the waste leveling position inside and stops.

In this state, the shredding operation is performed. As described above, when the shredder reaches the fan mechanism 50, the scraping operation is also performed. The shredder D by the dust sensor 56
Is detected, the shredding operation and the scraping operation stop.
At this point, the waste container 32 is full of shreds D.

When the door 12d is opened, the push-down block 60 retreats together with the door 12d, and at the same time, the movable base plate 34 returns to the standby position above the waste container 32 by the action of the spring 48. . Therefore, the waste storage box 32 can be taken out.

After discarding the shredded waste D in the waste storage box 32, the waste storage box 32 is placed on the bottom plate 12a again, and the door 12d is closed.
Moves down to the waste leveling position in the waste storage box 32 and stops.

In this state, the shredding operation can be performed again. The fan sensor 58 constantly counts the debris leveling means, that is, counts the rotation of the fan mechanism 50.
To detect the occurrence of an accident such as when the rotation of the blades 50a to 50d is forcibly stopped (locked). In the event of an accident, the warning lamp of the operation switch flashes to shut off the power, It operates to stop the scraping work.

In the above-described dust leveling operation, when the blades 50a to 50d of the fan mechanism 50 rotate, the blades 50a to 50d come into contact with the dust leveling brush 68 for the dust leveling means. Since the static electricity is eliminated by 68, troubles such as the attachment of shreds to the blades 50a to 50d of the fan mechanism 50 do not occur, and the dust leveling effect is sufficiently exhibited.

Also, the fan sensor static elimination brush 70 rotates with the rotation of the blades 50a to 50d of the fan mechanism 50 and operates so as to always clean the light projecting portion of the fan sensor 58. Since it is prevented from adhering to the light projecting portion, the function of the fan sensor 58 is prevented from being reduced.

Further, the dust-removing brush 72 for the dust sensor also rotates with the rotation of the fan mechanism 50 to operate so as to always clean the light projecting portion of the dust sensor 56, so that the shredded dust adheres to the light projecting portion of the dust sensor 56. Therefore, functional deterioration such as variation in the sensor distance of the dust sensor 56 is prevented.

In the above embodiment, the structure in which the fan mechanism 50 is moved up and down in accordance with the opening and closing of the door has been described. However, means for moving the fan mechanism 50 in the up and down direction are provided separately without interlocking with the opening and closing of the door 12d. It is also possible.

Further, the cleaning means for the dust leveling means is a discharging brush 68 for cleaning the dust, the cleaning brush for the fan sensor is a discharging brush 70 for the fan sensor, and the cleaning means for the dust sensor is a discharging brush for the dust sensor. Although an example using each of the cleaning elements 72 has been described, it is needless to say that other known cleaning means can be applied.

In the above-described embodiment, the case where three cleaning means for the dust sensor, cleaning means for the dust leveling means, and three cleaning means for the fan sensor are installed at the same time has been described as the most preferable example. It goes without saying that the respective effects can be achieved even if used alone or in combination of two types as appropriate.

The rotation speed of the fan mechanism 50 is not specifically described, but it is not a fan that blows air like a normal fan. Is achieved.

[0059]

As described above, according to the present invention, the dust sensor is constantly cleaned, no paper dust or the like adheres to the dust sensor, and it is detected that "dust is full" even though no dust is accumulated. Such a malfunction does not occur, and the problem that the height of the debris pile varies due to the change of the debris sensor distance is eliminated, the height of the debris pile becomes uniform, and the shredding is reduced by a simple mechanism. The bulk can be reduced to increase the storage amount of the waste storage box, and the waste storage box can be easily taken out and stored, and the waste removal effect can be sufficiently exhibited.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view showing one embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view in which a part of the above is omitted.

FIG. 3 is a sectional explanatory view showing a positional relationship between a push-down block and a movable base plate when a door is opened.

FIG. 4 is a sectional explanatory view showing a positional relationship between a push-down block and a movable base plate when a door is closed.

FIG. 5 is a pinched perspective view showing one example of a fan mechanism.

FIG. 6 is an enlarged enlarged explanatory view showing an example of a mounting mode of a charge removing brush for a dust sensor and a charge removing brush for a fan sensor.

[Explanation of symbols]

12 shredder, 12a bottom plate, 12b side plate, 1
2c upper lid plate, 12d door, 13 upper space, 14
Base plate, 15 Lower space, 16 Vertical cutter, 1
8 cross cutting cutter, 20 shredder, 22 motor, 2
4 board, 26, 30 dustproof cover, 28 control box, 32 dust storage box, 33 shatterproof frame, 34 movable base plate, 34a side surface, 36 board, 38 guide rail, 40 mounting base, 42 slide rail, 44
Shaft, 45 through hole, 46 insertion hole, 48 spring, 50 fan mechanism, 50a to 50d blade, 51
Rotating shaft, 52 motor, 54 support plate, 56 dust sensor, 58 fan sensor, 60 push-down block,
60a tip protrusion, 61a long flat surface, 61b slope, 61c short flat surface, 62 bearing, 64 bearing block, 66 cushion member, 68 dust removal brush for dust leveling means, 70 fan removal brush for fan sensor, 72 dust sensor for dust sensor Static elimination brush, 74 mounting plate,
76 shaft pulley, 78 shaft, 80 shaft pulley, 82
Pulley belt, D shreds, P waste paper

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Senji Tajima 3-800-1, Aioimachi, Kiryu-shi, Gunma 21 Oriental joint venture

Claims (9)

[Claims] 1. A shredding portion provided with a shredding blade for shredding waste paper, a shredding box for accommodating shreds shredded by the shredding portion, and the shredding box to the outside. An openable / closable door for taking out, dust leveling means rotatably and vertically mounted above the dust storage box, and moving the dust leveling means to an upper standby position and a lower dust leveling position. A movement stopping means for stopping the movement, a dust sensor provided above the dust storage box for detecting whether or not the dust storage box is filled with the shredder, and a dust for constantly cleaning the dust sensor. A shredder comprising: a sensor cleaning unit. 2. The dust sensor according to claim 1, wherein said dust sensor is a reflection type dust sensor having a light projecting portion, and said dust sensor cleaning means is a dust sensor discharging brush provided to contact-clean the light projecting portion of said dust sensor. The shredder according to claim 1, wherein: 3. The shredder according to claim 1, further comprising cleaning means for dust leveling means for constantly cleaning said dust leveling means. 4. A static elimination brush for dust leveling means, wherein said cleaning means for dust leveling means is provided in contact with said dust leveling means for removing static electricity generated in said dust leveling means. The shredder according to claim 3, wherein: 5. The fan according to claim 1, further comprising: a fan sensor provided above said dust leveling means for detecting presence / absence of said dust leveling means; and a fan sensor cleaning means for constantly cleaning said fan sensor. The shredder according to any one of claims 1 to 4, wherein the sensor always counts the rotation of the waste leveling means, and stops the shredding operation when the waste leveling means is locked. . 6. A reflection-type fan sensor in which the fan sensor has a light projecting portion, and a fan sensor static elimination brush provided so that the fan sensor cleaning means contacts and cleans the light projecting portion of the fan sensor. The shredder according to claim 5, wherein: 7. The movement stopping means interlocks with the opening and closing of the door, and when the door is opened, the dust leveling means stops moving to the upper standby position and the dust storage box can be taken out. 7. The dust removing means according to claim 1, wherein said scrap removing means stops moving to a lower scrap removing position to enable a smoothing operation of shredded scrap in said scrap storing box. A shredder according to any one of the preceding claims. 8. A movable base plate, which is vertically movable and constantly urged upward by an urging means, is provided in an inner space of the shredder, and the dust leveling means is connected to the movable base plate, and is pressed against the door. When the door is closed, the movable base plate is pushed down by the operation of the pushing down means, and the dust leveling means is pushed down to the dust leveling position, while when the door is opened, the pushing down means is provided. The movable base plate and the dust leveling means are returned to the upper standby position by the urging means, and the cleaning means for the dust leveling means is removed. 8. A shredder according to claim 7, wherein said dust leveling means is mounted on said movable base and is constantly cleaned by said dust leveling means cleaning means. 9. The shredder according to claim 1, wherein said dust leveling means is a fan mechanism having one or more dust leveling blades.