JP2000354784A - Shredder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shredder in which shredded pieces rolling-in preventing action is improved. SOLUTION: Rolling-in preventing guide bodies interposed and fixed between rotary blade plates 2 for preventing shredded pieces discharged from between the rotary blade plates from being pulled in or pulled up along an outer surface part 1A of a rotating shaft l are provided. Before the guide bodies are interposed between the rotary blade plates 2, an opposite distance between heads 8A of a surrounding inner edge 8 is large and the surrounding inner edge is in an open deformed state through a notch part 10 for widening or narrowing deformation, thereby inserting the guide bodies from outside the rotating shaft from between the heads 8A. After that, by clamping, the distance between the heads of the surrounding inner edges is narrowed and is made in a closed state through the notch part 10 for widening or narrowing deformation, and the surrounding inner edge is made in an inserted state along the outer periphery range more than at least a semicircular area and is arranged in a surrounding state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shredder for shredding paper to be discarded.

[0002]

2. Description of the Related Art A shredder generally has the following configuration.

[0003] By integral formation or joint formation, a plurality of rotating blade plates having a predetermined thickness are protruded from a rotating shaft at predetermined intervals in the axial direction in a juxtaposed state. The rotating shafts of the rotating shafts are supported so as to face each other, and between the rotating blade plates of one rotating shaft, the tip of each rotating blade plate of the other rotating shaft is disposed so as to be interposed therebetween, and from the rotating shaft direction. When viewed, the rotating blade plates are configured to alternately overlap, and sharp edges are formed at the left and right corners of the tip of each of the rotating blade plates, and the blade edges compete with each other and overlap to overlap. Are formed at regular intervals in the direction of the rotation axis. For example, a configuration is employed in which a number of opposed flat blades are engaged with each other.

[0004] Therefore, the portion where the rotating blade plate overlaps, that is,
By feeding from the top several stacked papers to the overlapping portion where a number of edge overlapping positions are juxtaposed, the paper is cut at each edge overlapping position while the paper is sent downward by the rotating blade plate rotated by the rotating shaft. For example, a large number of papers are cut in the longitudinal direction (feeding direction) and the paper is shredded into elongated strips, and the thin pieces are continuously shredded and discharged downward from between the rotary blade plates of the rotary shaft. are doing.

[0005]

However, for example, a strip of paper is fed from above, cut at the edge overlapping position, and discharged from between the rotary blade plates to the lower side. It rolls up along the outer surface of the rotating shaft,
In some cases, the paper feeding may be hindered or the paper may stop due to jamming.

Therefore, it is necessary to provide an entrainment preventing guide for preventing the entangling and winding of the fine fragments.

First, the following can be considered as the entanglement prevention guide body. A substantially semi-circular cutout opening is formed from the inner end surface of the plate material interposed between the rotary blade plates toward the center, and the distance between the tips is slightly larger than the outer diameter of the outer surface of the rotary shaft. A surrounding inner edge surrounding the outer half area of the outer half of the portion in close proximity is formed at the inner edge of the notch opening, and a guide body made of this plate material is interposed and fixed between the rotary blade plates from outside the rotary shaft. The end of the surrounding inner edge is configured to be as close to the outer surface as possible.

That is, even if the small fragments discharged after cutting from between the rotary blade plates attempt to roll up along the outer surface, they come into contact with the outer surface of the leading end of the inner peripheral edge and are discharged and guided downward along the inner end surface of the guide body. However, since the outer peripheral area of the inner half of the outer surface of the rotating shaft is not surrounded and is exposed, if a small fragment contacts this outer surface, it is attempted to wind along the outer surface. Therefore, even if the tip of the inner edge of the enclosure is made as close as possible to the outer surface with as little gap as possible, one or several pieces of the plurality of small fragments may enter through this gap and be rolled up along the outer surface. It still occurs.

Therefore, it is necessary to eliminate the exposed portion of the outer surface as much as possible, and to receive and guide the small fragments at the end of the inner edge of the surroundings and one end surface of the guide body connected thereto before attempting to wind in, Instead of a semicircular surrounding edge, the outer surface is surrounded by a C-shaped or substantially arc-shaped surrounding inner edge, the interval between the leading ends of the surrounding inner edge is narrowed to reduce the exposed portion of the outer surface, and the leading end and the outer surface are brought close to each other. Need to be done.

An object of the present invention is to provide an innovative shredder provided with a guide body capable of finding such a problem and solving the problem and realizing the above-described configuration.

Another object of the present invention is to attempt to fix a plate-like guide body between the rotary blade plates from the outside of the rotary shaft, but with respect to the rotary shaft having the rotary blade plate. If it is provided at the time of forming the joint, instead of being retrofitted, it is considered that this can be easily realized by simply making the inner peripheral edge of the envelope not a semicircle but a C shape. That is, for example, a guide having the C-shaped surrounding inner edge so as to cover the shaft spacer serving as the outer surface portion while forming a large number of rotary blade plates sequentially in the axial direction via the shaft spacer. It is conceivable to let the body intervene one by one,
In such splicing, the operation of sequentially interposing the guide members is extremely troublesome, resulting in extremely poor mass productivity and inevitably becomes more expensive.

Therefore, it is extremely practically important to provide a structure that can be retrofitted between rotary blade plates from the outside of the rotary shaft.

It is a technical problem of the present invention to provide a structure which can be retrofitted to a rotary shaft with a rotary blade plate which is integrally formed, since the integral forming method is extremely excellent in mass productivity and the like. In addition, for example, if a plate-like guide body in which a number of slits for simply passing the rotary blade plate are arranged in parallel is fitted from the outside, the configuration is such that the small fragments are received on the plate surface, and the roll-in is involved. Insufficient strength is required to prevent the occurrence of the problem, resulting in poor practicality.

In view of these points, the present invention guides a small fragment which is interposed between the rotary blade plates from the outside to be rolled up on the inner end face of the plate material, and is not a plate surface but a plate length. While having sufficient strength to receive, the outer surface portion can be surrounded by a semi-circle region or more, the distance between the tips of the inner edge of the surrounding is set to be equal to or less than the outer diameter, and the tip is brought close to or in contact with the outer surface portion, and the effect of preventing entanglement is further improved. The purpose is to provide an innovative shredder.

[0015]

The gist of the present invention will be described with reference to the accompanying drawings.

A plurality of rotary blade plates 2 provided in juxtaposition with the rotary shafts 1 disposed in opposition are provided so as to project from the rotary shaft 1 when viewed from the rotation axis direction. A blade edge overlapping position in which a cutting object 3 such as a piece of paper is fed into a portion G where the opposed rotating blade plates 2 alternately overlap, and a blade edge 2A of each rotating blade plate 2 overlaps. In the shredder configured to be cut by the GA and to discharge the small fragments 3A from between the rotary blade plates 2, the small fragments are interposed and fixed between the rotary blade plates 2 and discharged from between the rotary blade plates 2. An entrainment prevention guide body 6 for preventing 3A from being entrained or rolled up along the outer surface portion 1A of the rotary shaft 1 is provided.
A C-shaped or substantially arc-shaped surrounding inner edge 8 which is arranged and surrounded along the outer surface portion 1A of the rotating shaft 1 between the rotating blade plates 2 from one side of the plate material 7 to an inner central portion. The notch opening 9 is formed so that a notch 10 for wide and narrow deformation that enables the facing distance between the front ends 8A of the inner edge 8 of the enclosure to be made wider and narrower is connected to the inner edge 8 of the enclosure. Before the guide body 6 is interposed between the rotary blade plates 2, the facing distance between the front ends 8 A of the surrounding inner edges 8 is large through the wide and narrow deformation notches 10. Is open and deformed, so that the tip 8A
The guide body 6 is inserted between the rotary blade plates 2 from the outside of the rotary shaft 1 and clamped thereafter to form the notch 10 for wide and narrow deformation.
The distance between the distal ends 8A of the surrounding inner edge 8 is narrowed and closed from the rotating shaft 1 so that the surrounding inner edge 8 is at least a semicircle of the outer surface portion 1A of the rotating shaft 1 between the rotating blade plates 2. The small pieces 3A discharged from between the rotary blade plates 2 are discharged along one side of the guide body 6 by disposing them in a surrounding state in a fitted state along the outer peripheral area not less than the area. And a shredder characterized in that:

A tip 8A having a predetermined width of the surrounding inner edge 8 of the guide body 6 is in contact with or close to the outer surface 1A of the rotating shaft 1 between the rotating blade plates 2 serving as a rotating surface. Even if the small fragments 3A discharged from between the rotary blade plates 2 are to be caught along the outer surface 1A, the tip 8
2. A discharge guide without contacting along one side end surface 7A of the plate material 7 which is in contact with the outer surface of the front end 8A and is connected to the outer surface of the front end 8A. It relates to the described shredder.

The left and right edges of the small piece 3A are in contact with the left and right edges of the outer surface 1A of the rotary shaft 1 between the rotary blades 2 at the base of the rotary blade 2 so that the outer surface 1A
An edge support portion 11 provided by forming a step portion or a protrusion for holding the small fragments 3A in a separated state is provided in a protruding state with respect to the outer surface portion 1A, and the edge support portion 11 The tip 8A of the surrounding inner edge 8 is set to be longer than the separation distance at which the fragment 3A is separated from the outer surface portion 1A.
3. The device according to claim 2, wherein the device is arranged so as to be close to A.
It relates to the described shredder.

The guide member 6 is provided at one side of the plate member 7 from the side end face toward the inner central portion.
To form the surrounding inner edge 8, and to provide the notch recess or notch on the side opposite to the one side of the surrounding inner edge 8 toward the opposite side of the plate member 7, thereby obtaining the wide and narrow. A notch 10 for deformation is formed, and this one sheet material 7 is formed.
The guide body 6 made of is formed in a state in which the space between the distal ends 8A of the surrounding inner edge 8 is enlarged at least larger than the diameter of the outer surface portion 1A by separating the notch portion 10 for wide and narrow deformation in advance.
The guide body 6 is inserted into the outer surface portion 1A inward from the outside of the rotary shaft 1 and then clamped to narrow the notch portion 10 for wide and narrow deformation, thereby narrowing the gap between the front ends 8A to remove the guide member. In the stop state, the front end 8 of the surrounding inner edge 8
The shredder according to any one of claims 1 to 3, wherein A is configured to be able to approach at least the outer surface portion 1A.

Further, the guides 6 are provided between the rotary blade plates 2 of the rotary shafts 1 respectively, and the guides 6 are fixed in a connected state. A shredder according to any one of the preceding claims.

The rotary shaft 1 having a large number of rotary blade plates 2 is not integrally formed by joining the rotary blade plates 2 via spacer shafts, but is formed by integral molding. A shredder according to any one of claims 1 to 5, characterized in that:

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.

The present invention is not limited to the case where a plurality of rotary blade plates are juxtaposed and protruded, and even if the rotary shafts are integrally formed or jointly formed, the present invention is applied to a case where each rotary blade is provided from the outside of the rotary shaft 1. An entrainment prevention guide body 6 for receiving and discharging the small fragments 3A at the end face between the plates 2 can be interposed and fixed by retrofitting.

That is, a notch portion 10 for wide and narrow deformation is provided on the inner edge 8 of the enclosure formed by cutting the plate-shaped guide body 6, and the inner edge 8 of the enclosure 8 is formed through the notch portion 10 for wide and narrow deformation.
Of the rotating shaft 1 is made larger than the outer diameter of the outer surface portion 1A of the rotating shaft 1 so that the C-shaped or substantially arc-shaped surrounding inner edge 8 is opened. The outer surface portion 1A is fitted from the outside, and then the guide body 6 is clamped to narrow the space between the tips 8A through the notch portion 10 for wide and narrow deformation and to close the inner peripheral edge 8 in a C-shape or a substantially arc-shape. The surrounding inner edge 8 surrounds the semicircular region or more of the outer surface portion 1A, and at least the tip 8A of the surrounding inner edge 8 is arranged close to or in contact with the inner surface of the outer surface portion 1A on the cutting side.

That is, the present invention can be retrofitted by adopting such a configuration, and can surround not only the outer half of the outer surface portion 1A but also the inner portion on the cutting side.
Can be surrounded and disposed without greatly exposing the inner outer surface portion, which is the cutting side.

In other words, as the distance between the tips 8A is reduced, the exposure range can be reduced as the distance is reduced.
Can be suppressed.

More specifically, if only the semi-circular region is surrounded and the inner semi-circular region is largely exposed, the exposed outer surface portion 1A easily causes a wrapping phenomenon in the small fragment 3A, and the wrapping phenomenon occurs once. Later, even if the distal end 8A of the surrounding inner edge 8 is brought close to the outer surface 1A, one or several sheets may get caught up along the outer surface 1A from this gap. Since the inner exposed portion of the outer surface portion 1A is also surrounded, the exposed portion can be reduced. The discharge guide can be received and the entanglement preventing action can be effectively exhibited. As described in the problem to be solved by the invention, the present invention has a configuration that can secure sufficient strength as a configuration for receiving and guiding the discharge by the end face, that is, the plate length of the plate material, and a configuration that enlarges the surrounding area. This is realized based on an epoch-making idea of providing a notch 10 for wide / narrow deformation and opening / closing the inner edge 8 of the enclosure to attach the same.

Further, in the invention according to claims 3 and 4,
By improving the proximity structure between the distal end 8A of the surrounding inner edge 8 and the outer surface portion 1A, it is possible to further prevent the entrapment. That is, the rotating blade plate 2 is a base portion of the rotating blade plate 2.
The left and right edges of the small piece 3A abut on the left and right sides of the outer surface 1A of the rotating shaft 1 therebetween to form a step or a protrusion for holding the small piece 3A away from the outer surface 1A. The edge support portion 11 is provided in a protruding state with respect to the outer surface portion 1 </ b> A.
The front end 8A of the surrounding inner edge 8 is disposed closer to the outer surface 1A than the separation distance that is kept away from A.

In order to eliminate the possibility of entanglement, the outer surface 1
Although it may be considered that the tip 8A of the surrounding inner edge 8 only needs to be brought into contact with A, contact resistance to the rotation of the rotating shaft 1 is reduced if the tip 8A is simply contacted to eliminate the gap between the outer surface portion 1A and the tip 8A. In addition to the small fragments 3A
As a result, the small pieces 3A are not smoothly guided to be ejected, and there is a risk that a discharge resistance is generated, which also causes a problem in paper jam and paper feeding.

In addition, it can be said that it is practically very difficult to work such that the small pieces 3A are smoothly discharged while the tip 8A is in contact with the outer surface 1A.

Therefore, according to the present invention, even if the outer surface portion 1A is exposed by providing the edge support portions 11 on the left and right of the outer surface portion 1A.
Even when the small pieces 3A are sent along the small pieces 3A, the both ends of the small pieces 3A are supported by the edge support portions 11, so that the small pieces 3A do not come into contact with the outer surface portion 1A, and the outer surface portions only correspond to the height of the edge support portions 11. It will be sent at a distance from 1A.

Further, the present invention is directed to the tip 8A of the surrounding inner edge 8.
Is smaller than the height of the edge support portion 11 and is close to the outer surface portion 1A, so that the small pieces 3A can be reliably received on the outer surface of the tip 8A.

That is, even if there is a gap without bringing the tip 8A into contact with the outer surface portion 1A, the small fragments 3A do not enter this gap, and are always received by the outer surface of the tip 8A. It will be guided and discharged.

Therefore, the entangling phenomenon of the small fragments 3A can be more reliably prevented.

[0035]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.

In this embodiment, several sheets of paper 3 are stacked from above on a portion G where the opposing rotary blade plates 2 alternately overlap, that is, an overlapping portion where a number of blade edge overlapping positions GA are juxtaposed in the axial direction. By being fed, the paper 3 is cut at each blade edge overlapping position GA (cut in the longitudinal direction (feed direction) many times) while the paper 3 is fed downward by the rotating rotary blade plate 2, and the paper 3 is formed into a long and narrow strip shape. This shredder 3A is a shredder configured to be continuously shredded and discharged downward from between the rotary blade plates 2 of the rotary shaft 1, and is fixedly interposed between the rotary blade plates 2. In addition, there is provided an entrainment prevention guide body 6 for preventing the small fragments 3A discharged from between the rotary blade plates 2 from being entrained or rolled up along the outer surface 1A of the rotary shaft 1.

The guide member 6 for preventing entanglement according to this embodiment has the following shape.

A plate 7 of a predetermined thickness is provided between the rotary blade plates 2 and can be inserted and interposed from the outside of the rotary shaft 1 and fixed. The guides 6 are connected to the ends of the plate 7 by connecting rods. There is provided a connection hole 12 for fixing by using.

In the present embodiment, the C is disposed in the fitted state along the outer surface 1A of the rotary shaft 1 between the rotary blade plates 2 and surrounds the C.
Is formed by forming a cutout opening 9 from one side of the plate member 7 to the inner central portion, and furthermore, the facing distance between the front ends 8A of the surrounding inner edge 8 is reduced or increased. The notch 10 for wide and narrow deformation which is made possible is formed so as to be connected to the surrounding inner edge 8.

Specifically, a C-shaped notch opening 9 is provided at one side of the plate member 7 from the side end face 7A toward the inner center, thereby forming the C-shaped surrounding inner edge 8, The notch 10 (notch) for wide and narrow deformation is formed by providing a notch notch on the side opposite to the one side of the surrounding inner edge 8 toward the opposite side of the plate member 7.

That is, in this embodiment, the guide body 6 made of the single plate member 7 is separated from the front end 8A of the surrounding inner edge 8 in advance by separating the notch portion 10 for wide / narrow deformation so that at least the outer surface portion becomes lower than the direct line. The guide body 6 is inserted into the outer surface portion 1A inward from the outside of the rotary shaft 1 in a state where the notch portion 10 is wider than the diameter of 1A, and then the notch 10 for wide and narrow deformation is clamped. 8A
By narrowing the gap, it is prevented from falling off, and the surrounding inner edge 8
Is configured to be able to approach at least the outer surface portion 1A.

Therefore, the present embodiment can be retrofitted, and can sufficiently surround not only the outer half of the outer surface portion 1A but also the inner portion on the cutting side, and enlarges the inner outer surface portion on the cutting side of the outer surface portion 1A. It is possible to surround and arrange without exposing.

In other words, the narrower the distance between the tips 8A, that is, the closer the C-shaped edge is to a circle, the smaller the exposure range can be, and the more the small fragments 3A can be prevented from being entangled. Become.

More specifically, if only the semi-circular region is surrounded and the inner semi-circular region is exposed, the exposed outer surface portion 1A easily causes the entangling of the small fragments 3A. Then, even if the tip 8A of the surrounding inner edge 8 is brought close to the outer surface portion 1A, one or several sheets may be entangled and rolled up from the gap along the outer surface portion 1A. Since the inner exposed portion of the outer surface portion 1A is also surrounded, the exposed portion can be reduced, and before the entanglement phenomenon occurs (before the strong occurrence), the small fragment 3A is attached to the outer surface of the tip 8A or the one end surface 7A of the guide body 6 at one side end surface 7A. The discharge guide can be received and the entanglement preventing action can be effectively exhibited.

Accordingly, the small piece 3A is configured to receive the end face 7A, that is, the so-called plate length of the plate member 7 and to guide the discharge, so that sufficient strength can be secured. It is configured such that it can be attached by opening and closing the surrounding inner edge 8.

A method is considered in which the plate member 7 is vertically divided and fixed beforehand. However, in this case, it is difficult to position the inner edge of the enclosure and the end thereof, and it is very difficult to mount the same. Also in this respect, the present invention can be fixed simply by inserting and interposing and clamping if one plate material 7 is processed into a predetermined shape, and it is retrofitting, very easy to install, and extremely mass-productive. To excel.

Further, the left and right edges of the small piece 3A are in contact with the right and left edges of the outer surface 1A of the rotary shaft 1 between the rotary blades 2 at the base of the rotary blade 2 so as to contact the outer surface. 1A
A step is formed to hold the small pieces 3A apart from each other, and an edge support portion 11 is provided in a protruding state with respect to the outer surface portion 1A. The front end 8A of the surrounding inner edge 8 is disposed closer to the outer surface portion 1A than the separation distance that is separated and held from the portion 1A.

In order to eliminate the possibility of entanglement, the outer surface 1
Though it may be considered that the tip 8A of the surrounding inner edge 8 only needs to be brought into contact with A, simply contacting the outer surface portion 1A and the tip 8A causes a contact resistance to the rotation of the rotary shaft 1 if there is no contact. Not only does the small piece 3A come into contact with the contact position, but the small piece 3A is not smoothly guided to be ejected, and discharge resistance is generated, which may cause debris jamming and paper feeding. There is.

Further, it can be said that it is practically very difficult to process the fine pieces 3A so as to be smoothly discharged while the distal end 8A is in contact with the outer surface 1A.

Therefore, in the present embodiment, by providing the edge support portions 11 on the left and right of the outer surface portion 1A, even if the outer surface portion 1A is exposed.
Even if the small pieces 3A are sent along A, the small pieces 3A are separated from each other by the height of the edge support portions 11 without contacting the outer surface portion 1A because both ends thereof are supported by the edge support portions 11. It will be sent in the state.

Further, the present invention is directed to a tip 8A of the surrounding inner edge 8.
Is smaller than the height of the edge support portion 11 and is close to the outer surface portion 1A, so that the small pieces 3A can be reliably received on the outer surface of the tip 8A.

That is, even if there is a gap without bringing the tip 8A into contact with the outer surface portion 1A, the small fragments 3A do not enter this gap and are always received by the outer surface of the tip 8A, and are guided by the end face 7A of the plate 7. And be discharged.

Therefore, it is possible to more reliably prevent the entangling phenomenon of the small fragments 3A.

That is, in the present embodiment, a step edge corresponding to the edge support portion 11 is provided on the surrounding inner edge 8, and the edge support portion is provided.
The surrounding inner edge 8 is interposed between the ends 11 so that the tip 8A enters between the edge support portions 11 and is lower than the height of the edge support portion 11 and is close to the outer surface portion 1A.

[0055]

Since the present invention is constructed as described above, the guide body can be retrofitted to the rotary shaft with the rotary blade plate, and can be retrofitted even in the case of an integrally formed configuration. In addition to being a shredder, it guides the small pieces that are interposed between the rotating blade plates from the outside to the end and rolls in the inner end surface of the plate material, and has sufficient strength to receive not by the plate surface but by the plate length, so to speak. The outer surface portion can be surrounded by a semicircular region or more, the distance between the tips of the surrounding inner edge is set to be equal to or less than the diameter of the outer surface portion, and the tip is close to or abutted on the outer surface portion, so that the entrapment phenomenon of fine fragments can be suppressed. It becomes an extremely innovative shredder.

According to the third and fourth aspects of the present invention, by providing the edge support portions on the left and right sides of the outer surface, even if the fine fragments are sent along the exposed outer surface, the fine fragments are not removed. Since both ends are supported by the edge support portion, they are sent without being in contact with the outer surface portion while being separated from each other by the height of the edge support portion. Because the configuration is lower than the height of the part and it is close to the outer surface, the fine fragment is reliably received by the outer surface of the tip, and even if there is a gap without the tip touching the outer surface, the fine fragment is It does not enter the gap, but is always received by the outer surface of the leading end, and is guided and discharged by the end face of the plate material. This is a more revolutionary shredder that can more surely prevent the entanglement of the small fragments.

In particular, according to the second and fourth aspects of the present invention, a more excellent shredder in which the present invention can be realized more easily.

[Brief description of the drawings]

FIG. 1 is a schematic configuration explanatory plan view before a entanglement prevention guide body of the present embodiment is interposed and fixed.

FIG. 2 is an enlarged explanatory side view and an enlarged explanatory plan view of the embodiment.

FIG. 3 is an enlarged explanatory side view showing a guide body on one side for describing a roll-in preventing action of the present embodiment.

FIG. 4 is an enlarged explanatory side view showing guide members on both sides for explaining the entanglement preventing operation of the present embodiment.

FIG. 5 is an explanatory perspective view of the guide body according to the present embodiment before interposing and fixing.

FIG. 6 is an enlarged explanatory perspective view of a main part of the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotation axis 1A Outer surface part 2 Rotating blade plate 2A Blade edge 3 Shredded object 3A Fine piece 6 Entanglement prevention guide body 7 Plate material 7A One side end face 8 Surrounding inner edge 8A Tip 9 Notch opening 10 Notch for wide and narrow deformation 11 Edge Bearing part G Overlapping part GA Blade edge overlapping position

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takahiro Nozawa 3-800-21 Aioimachi, Kiryu-shi, Gunma F-term in Oriental Co., Ltd. 4D065 CA12 CB02 CC01 CC08 DD09 DD22 EB12 EC09

Claims (6)

[Claims] 1. A plurality of rotating blade plates provided in a state of being juxtaposed in a state of being protruded from a rotating shaft disposed in an opposed state, respectively, and the end portions of the opposed rotating blade plates are alternately viewed from the direction of the rotating shaft. A small piece is cut at a blade edge overlapping position where a cutting object such as a piece of paper is fed to a portion where the opposed rotating blade plates alternately overlap and the blade edge of each rotary blade plate overlaps. In the shredder configured to be discharged from between the rotary blade plates, the shredder is interposed and fixed between the rotary blade plates, and the small fragments discharged from between the rotary blade plates are wound along the outer surface of the rotary shaft. Alternatively, an entrainment prevention guide body for preventing winding up is provided, and this guide body is formed of a plate material, and is arranged in a fitted state along the outer surface of the rotary shaft between the rotary blade plates and surrounds the C-shape or The inner edge of the substantially arc-shaped enclosure is connected to one side of the plate material. Formed by forming a notch opening toward the inner central portion from the front, and further, a notch portion for wide and narrow deformation that enables to narrow the facing distance between the tips of the surrounding inner edge is connected to the surrounding inner edge. Before the guide body is interposed between the rotary blade plates, the deformed state in which the facing distance between the tips of the surrounding inner edges is large through the notch for wide and narrow deformation and the surrounding inner edge is open is provided. By inserting, the guide body is inserted between the rotary blade plates from the outside of the rotating shaft from between the front ends, and then clamped to narrow the distance between the front ends of the surrounding inner edge through the notch for wide / narrow deformation, thereby closing. A state in which the rotation shaft is prevented from coming off from the rotation shaft, and the surrounding inner edge is fitted in at least a semicircular region or more on the outer peripheral portion of the outer surface of the rotation shaft between the rotary blade plates, and is disposed in the surrounding state. The above discharged from between the rotating blade plates Shredder fragment is characterized by being configured so as to be discharged along the one side of the guide body. 2. A front end having a predetermined width of a surrounding inner edge of the guide body abuts or is disposed close to an outer surface of a rotating shaft between the rotating blade plates serving as a rotating surface. Even if the small pieces discharged from the tape are to be rolled up along the outer surface portion, they are brought into contact with the outer surface of the front end, without being rolled up along one side end surface of the plate material connected to the outer surface of the front end. 2. The shredder according to claim 1, wherein the shredder is configured to be guided for discharge. 3. The small fragment is separated from the outer surface by contacting the left and right edges of the small fragment at the base of the rotary blade plate on the left and right sides of the outer surface of the rotary shaft between the rotary blade plates. An edge supporting portion provided by forming a step portion or a protrusion to be kept in a separated state is provided in a protruding state with respect to the outer surface portion, and the small fragment is separated and held from the outer surface portion by this edge supporting portion. 3. The shredder according to claim 2, wherein a tip of the inner edge of the enclosure is disposed closer to an outer surface than a separation distance. 4. The guide body forms the surrounding inner edge by providing the notch opening from a side end surface to an inner central portion on one side of the plate material, and the one side of the surrounding inner edge. The notch for wide and narrow deformation is formed by providing a notch recess or a notch notch on the opposite side to the opposite side of the plate material, and the guide body made of a single plate material is previously subjected to the wide and narrow deformation. The guide body is inserted into the outer surface portion inwardly from the outside of the rotary shaft while the notch portions are separated from each other so that the distance between the tips of the surrounding inner edges is larger than at least the diameter of the outer surface portion. The clamp is then clamped to narrow the notch for wide / narrow deformation and narrow the gap between the tips to prevent them from falling off and to allow the tip of the surrounding inner edge to be at least close to the outer surface. Term The shredder according to any one of claims 1 to 3. 5. The guide according to claim 1, wherein the guides are interposed between the rotary blade plates of the rotary shafts, and the guides are fixed in a connected state. Shredder described in. 6. The rotary shaft 1 having a large number of rotary blade plates 2 is not integrally formed by joining the rotary blade plates 2 via spacer shafts, but is formed by integral molding. The shredder according to any one of claims 1 to 5, characterized in that: