KR102226029B1 - Cutter and paper shredder with the same - Google Patents

Abstract

The present invention relates to a cutter for a document shredder and to a document shredder using the same. The cutter for a document shredder includes a plurality of cutting units formed to protrude from an outer circumferential surface; and a dispersion groove formed concavely toward the center of the cutter between each cutting unit, wherein a plurality of documents placed in an overlapping state using the dispersion groove are separated from each other, and the recovery of the shredded documents is impossible by dispersing the cut debris, thereby improving security.

Description

Cutter for document shredder and document shredder to which it is applied {CUTTER AND PAPER SHREDDER WITH THE SAME}

The present invention relates to a document shredder, and more particularly, to a document shredder for cutting a document into pieces, and a document shredder to which the same is applied.

In general, a document shredder cuts security documents or confidential documents, documents of companies in which personal information is entered, and receipts of financial institutions into pieces, and is used in various places such as national institutions, government offices, enterprises, and financial institutions.

In addition, document shredders are provided in offices and banks of each institution to prevent and protect personal information written on confidential documents of state institutions, government offices, and companies, and statements issued through cash dispensers from financial institutions.

In such a document shredder, the document is shredded by people simply inserting the paper into the slot, and the shredded document makes the contents unrecognizable.

To this end, the document shredder includes a motor and a cutter for the document shredder, and the document shredder is rotated by the rotational force of the motor to shred the input document.

In this way, the document shredder implements security that blocks the leakage of information regardless of the type and size of the customer by shredding documents.

For example, in Patent Document 1 and Patent Document 2 below, techniques for improving the security of a document shredder are disclosed.

In Patent Document 1, a user recognition device is provided at the top of the case, a document recognition device is provided at the document input port to identify the document discarder and the document to be discarded, and the structure to manage the discarder and the document to be discarded at the time of the document disposal is described. Has been.

In Patent Document 2, an authentication means for generating a signal for authentication with an illuminance sensor and a take-out means for bypassing the cutter under set conditions are provided to enhance security in the process of shredding and discarding documents. A configuration that prevents accidents caused by is described.

Korean Patent Registration No. 10-0923064 (announced on October 22, 2009) Korean Patent Registration No. 10-1656073 (announced on September 9, 2016)

Meanwhile, when a document shredder according to the prior art is shredded by inputting a plurality of documents at the same time, there is a problem in that security is deteriorated even after the shredded documents are kept in a clustered state.

An object of the present invention is to solve the above-described problems, and when a plurality of documents are inserted at the same time in a superimposed state, a document shredder for a document shredder capable of improving security by distributing shredded documents and a document shredder to which the same is applied. To provide.

Another object of the present invention is to provide a cutter for a document shredder capable of shredding a plurality of documents input in a state of being superimposed on each other in a state of being separated from each other and dispersing the shredded document pieces, and a document shredder to which the same is applied.

In order to achieve the above object, the cutter for a document shredder according to the present invention has a plurality of cutting portions protruding from the outer circumferential surface, and a distribution groove is formed concave toward the center of the cutter between each cutting portion, and the dispersion groove Is characterized in that a plurality of documents put in a state of being superimposed on each other are separated from each other, and the cut chips are dispersed.

In addition, in order to achieve the above object, the document shredder to which the cutter for the document shredder according to the present invention is applied has an external shape and a main body provided with an inlet for inserting documents, installed inside the main body and connected to the inlet. And a shredded portion for cutting documents into preset horizontal and vertical lengths, and a collection container provided under the shredded portion and temporarily collecting the shredded items, and the shredded portion includes a first rotation shaft and a second rotating shaft disposed in parallel with each other. A rotation shaft, a plurality of pairs of cutters continuously assembled to cross each other with the first rotation shaft and the second rotation shaft, and a plurality of cutting portions for cutting documents and a center of the cutter between each cutting portion are disposed on an outer circumferential surface of the cutter. Distributed grooves are formed to be concave toward each other, and the dispersing grooves separate a plurality of documents put in a state of being overlapped with each other, and disperse the cut debris.

As described above, according to the cutter for a document shredder according to the present invention and the document shredder to which the same is applied, a plurality of documents inserted in a state of overlapping each other by forming a dispersion groove between the cutting portions of the cutter are separated from each other and cut, The effect of being able to collect by dispersing the cut debris from each other is obtained.

Accordingly, according to the present invention, a plurality of documents put in a state of overlapping each other are separated from each other and shredded, and the shredded cutting debris is dispersed to make it impossible to recover after shredding, thereby obtaining an effect that security can be improved.

In addition, according to the present invention, it is possible to effectively cut the document by using the effect of cutting the document with scissors by forming the tip and one side of the cutting unit to be inclined, and the effect of minimizing the noise generated in the document shredding process is obtained. .

In addition, according to the present invention, by forming both sides of the dispersing groove into curved surfaces having different curvatures, there is an effect that a plurality of documents inserted in an overlapping state are guided to be easily put into the dispersing groove, and cutting debris can be effectively dispersed. Is obtained.

1 is a perspective view of a document shredder to which a document shredder cutter according to a preferred embodiment of the present invention is applied,
2 is a perspective view of a cutter for a document shredder according to a preferred embodiment of the present invention,
3 is a front view of the cutter for the document shredder shown in FIG. 2;
4 is a side view of the cutter for the document shredder shown in FIG. 2;
FIG. 5 is a diagram illustrating a process of shredding a plurality of documents inserted in an overlapping state using a cutter for a document shredder according to a preferred embodiment of the present invention;
6 is a perspective view of a cutter for a document shredder according to another embodiment of the present invention,
7 is a front view of a cutter for a document shredder according to another embodiment of the present invention.

Hereinafter, a cutter for a document shredder and a document shredder to which the document shredder is applied according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, a configuration of a document shredder to which a document shredder cutter according to a preferred embodiment of the present invention is applied will be described in detail with reference to FIG. 1.

1 is a perspective view of a document shredder to which a document shredder cutter according to a preferred embodiment of the present invention is applied.

Hereinafter, terms indicating directions such as'left','right','front','rear','upward' and'downward' are defined as indicating each direction based on the state shown in each drawing. do.

Document shredder 10 to which a document shredder cutter according to a preferred embodiment of the present invention is applied, as shown in FIG. 20) and connected to the inlet 21 to cut documents into preset horizontal and vertical lengths, and a collection provided under the shredded section 30 to temporarily collect the shredded items. It includes a container 40.

The collection container 40 may be formed in a hexahedral shape with an open upper surface to collect cut debris that is shredded and dropped by the shredded portion 30.

The sub-cut 30 may include a plurality of pairs of cutters 50 that are continuously assembled to cross each other so as to cross each other with a first rotation shaft and a second rotation shaft, and the first rotation shaft and the second rotation shaft arranged parallel to each other. Each of the first and second rotation shafts may have a polygonal cross-section, for example, a hexagonal shape.

In addition, the sub-end 30 is a drive motor 31 that generates a driving force, a rotation gear 32 installed at one end of the first rotation shaft, and rotates by receiving the driving force generated from the driving motor 31, and the other end of the first rotation shaft. It may include a drive gear 33 installed in the drive gear 33 and a driven gear 34 installed at one end of the second rotation shaft so as to mesh with the drive gear 33.

The driving motor 31 and the rotating gear 32 may be connected by a connecting means such as a belt or a chain or connected through a gear, and the driving motor 31 may be applied with a DC motor, a brushless motor, etc., and a motor As long as it is possible to control the rotational speed of, it is not particularly limited.

Here, as the first rotation shaft and the second rotation shaft are formed in the same cross-sectional shape, the configuration of the cutter 50 respectively coupled to the first rotation shaft and the second rotation shaft is the same.

Next, a configuration of a cutter for a document shredder according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 2 to 4.

2 is a perspective view of a cutter for a document shredder according to a preferred embodiment of the present invention, FIG. 3 is a front view of the cutter for a document shredder shown in FIG. 2, and FIG. 4 is a side view of the cutter for a document shredder shown in FIG. .

The cutter for a document shredder (hereinafter abbreviated as'cutter') 50 according to a preferred embodiment of the present invention is formed in an approximately disk shape, as shown in FIGS. 2 to 4, and is formed in the center of the cutter 50 A coupling hole 51 coupled to the first rotation shaft may be formed.

The coupling hole 51 may be formed in a polygonal shape, for example, a hexagonal shape in cross section so as to correspond to the cross section of each rotation axis.

On one side of the coupling hole 51, a key groove 52 having a substantially semicircular cross section may be formed. The key groove 52 is a part into which a key coupled to the rotation shaft is inserted, and functions to ensure coupling with the rotation shaft and to accurately transmit the rotational force of the rotation shaft to the cutter 50 during rotation of the rotation shaft.

A plurality of cutting portions 53 formed in a sawtooth shape may be provided on the outer circumferential surface of the cutter 50 so as to cut the document.

A distribution groove 54 is formed between each of the cutting portions 53 to separate the plurality of documents while being in contact with a plurality of documents overlapping each other, and dispersing the cutting debris cut by the cutting portion 53.

The dispersion groove 54 may be formed to be concave toward the center of the cutter 50 from the outer circumferential surface of the cutter 50 at a substantially central portion between each of the cutting portions 53.

The cutter 50 may be manufactured by mixing metal powders of Fe, Cu, Ni, graphite, and Mn into a substantially plate shape, and then cutting through a press.

Alternatively, the cutter 50 may be manufactured through a process of mixing the above-described raw materials and filling the mold, applying pressure to compression molding, and sintering at a temperature equal to or lower than the melting point of the metal powder.

Next, referring to FIG. 5, a document shredder cutter according to a preferred embodiment of the present invention and a method of operating the document shredder applied thereto will be described in detail.

FIG. 5 is a diagram illustrating a process of shredding a plurality of documents inserted in a state of being superimposed on each other using a cutter for a document shredder according to a preferred embodiment of the present invention.

As shown in FIG. 5, a plurality of documents D inserted in a state of being superimposed on each other are inserted between a plurality of pairs of cutters 50. As shown in FIG.

At this time, as the plurality of pairs of cutters 50 rotate in opposite directions to each other, the plurality of documents D overlapping each other moves downward and is fed into the distribution groove 54 formed between the respective cutting portions 53.

Then, the plurality of documents D overlapped with each other are separated from each other while being in contact with the outer circumferential surface of the cutter 50 at the rear side of the distribution groove 54 in a state in which the tip of the document D is in contact with the distribution groove 54.

As described above, the cutting debris cut to a width corresponding to the horizontal width of each cutter 50 in a state separated from each other is again cut to a vertical length corresponding to the distance between each cutting unit 53 by the next cutting unit 53 do.

At this time, the shredded cut debris may be discharged from the dispersion groove 54 and fall downward and collected in the collection container 40 in a dispersed state.

Through the process as described above, the present invention forms a distribution groove between each cutting part of the cutter, separates and cuts a plurality of documents put in an overlapping state from each other, and distributes the cut debris to each other for collection. .

Accordingly, the present invention can improve security by separating and shredding a plurality of documents put in an overlapping state, and distributing the shredded cutting debris to make it impossible to recover after shredding.

On the other hand, in FIGS. 2 to 4, each cutting part is shown as having its tip formed along the horizontal direction, but in order to cut the document in a way that cuts the document using each cutting part, and to prevent noise generated during the shredding process, each cutting part The tip and one side can be formed to be inclined.

For example, Figure 6 is a perspective view of a document shredder cutter according to another embodiment of the present invention.

In the document shredder cutter 50 according to another embodiment of the present invention, as shown in FIG. 6, the left side of each cutting part 53 has a substantially rectangular cross section, and the right side of the cutting part 53 The silver cross section may be formed in an approximately triangular shape.

In addition, the front end of the cutting portion 53 may be formed to be inclined by a predetermined inclination angle toward the upper right side, for example. The inclination angle is a sharply formed left end of the cutting part 53, thereby minimizing the initial contact part of the document with the tip of the cutting part 53, and tearing the document by the rotational force of the cutting part 53 during the shredding process of the document. You can prevent losing and cut the document by using the effect of cutting the document with scissors.

In addition, the right side of the cutting part 53 may be formed as a concave curved surface with an inclined surface inclined downward toward the rear side.

In addition, the dispersion groove 54 may also have an inclined surface inclined downward to the right.

As such, the cutter 50 having an inclined surface may be manufactured through compression molding and sintering among the above-described manufacturing methods.

Accordingly, the present invention can effectively cut a document by using the effect of cutting the document with scissors by forming the tip and one side of the cutting portion in an inclined manner, and minimizes noise generated during the document shredding process.

In addition, in FIGS. 2 to 4, the dispersion groove 54 is shown as a curved surface having a constant curvature in a substantially arc or semicircular shape concave toward the center of the cutter 50, but the present invention is not limited thereto.

For example, Figure 7 is a front view of a document shredder cutter according to another embodiment of the present invention.

In the cutter 50 for a document shredder according to another embodiment of the present invention, the dispersion groove 54 may have different curvatures on both sides depending on the rotation direction of the cutter 50 as shown in FIG. 7. .

That is, the left portion of the dispersion groove 54 may be formed with a larger curvature than the right portion.

So, a plurality of documents (D) put in a state of being superimposed on each other fall along the outer circumferential surface of the cutter 50 when the cutter 50 rotates and are easily inserted into the distribution groove 54, compared to the left side of the distribution groove 54. They can be easily separated from each other by being in contact with the right side of the dispersion groove 54 having a small curvature.

In addition, the cut debris cut by the cutting part 53 may be discharged from the distribution groove 54 and fall in a dispersed state to be collected into the collection container 40.

As described above, according to the present invention, distributing grooves having different curvatures on both sides of the cutter are formed between the cutting portions of the cutter to separate and cut a plurality of documents put in an overlapping state, and effectively disperse the cutting debris.

Although the invention made by the present inventor has been described in detail according to the above embodiment, the invention is not limited to the above embodiment, and it goes without saying that it can be changed in various ways without departing from the gist of the invention.

The present invention is applied to a document shredder cutter and a document shredder technology to which the same is applied to a document shredder for cutting a plurality of documents put in a state of overlapping each other by forming a dispersion groove between each cutting portion of the cutter, and effectively dispersing the cutting scraps.

10: document shredder
20: main body 21: inlet
30: sedan 31: drive motor
32: rotating gear 33: driving gear
34: driven gear
40: collection container
50: cutter
51: coupling hole 52: keyway
53: cutting part 54: dispersion groove

Claims (6)

In the document shredder cutter having a plurality of cutting portions protruding from the outer circumferential surface,
A distribution groove is formed in the center between each cutting part, spaced apart from each cutting part, and concave toward the center of the cutter,
The dispersing groove is a document shredder, characterized in that the plurality of documents inserted in a state of overlapping each other are separated from each other by contacting the outer circumferential surface of the cutter at the rear side of the distributing groove while the tip of the document is in contact with the distributing groove, and dispersing the cut debris. Dragon cutter. The method of claim 1,
The dispersion groove is a document shredder, characterized in that formed in a concave curved surface having a constant curvature in the center between each cutting portion. The method of claim 1,
The dispersion groove is a document shredder cutter, characterized in that formed in a curved surface having different curvature on both sides according to the rotation direction of the cutter. The method of claim 3,
A cutter for a document shredder, characterized in that the left portion of the distribution groove that first comes into contact with the plurality of documents is formed in a curved surface having a larger curvature than the right portion. The method of claim 1,
Cutter for a document shredder, characterized in that the dispersion groove is formed with an inclined surface inclined toward one side. In the document shredder to which the cutter for a document shredder consisting of any one of claims 1 to 5 is applied,
The body that forms the appearance and is provided with an inlet into which documents are inserted,
A small section installed on the inside of the main body and connected to the inlet to cut a document into preset horizontal and vertical lengths, and
It is provided under the shredded portion and includes a collection container for temporarily collecting the shredded material,
The sub-cut part includes a first rotation shaft and a second rotation shaft arranged parallel to each other, and a plurality of pairs of cutters that are continuously assembled to cross each other with the first rotation shaft and the second rotation shaft,
A plurality of cutting portions for cutting documents on the outer circumferential surface of the cutter, and
It is spaced apart from each cutting part in the center between each cutting part, and a distribution groove is formed concave toward the center of the cutter,
The dispersing groove is a document shredder, characterized in that the plurality of documents inserted in a state of overlapping each other are separated from each other by contacting the outer circumferential surface of the cutter at the rear side of the distributing groove while the tip of the document is in contact with the distributing groove, and dispersing the cut debris. Document shredder with a paper cutter.

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