KR20120010931A - A paper shredder and a method for shredding a paper - Google Patents

Abstract

PURPOSE: A paper shredder is provided to reduce error occurred in an automatic paper feeding system and to quickly shred paper. CONSTITUTION: A paper shredder comprises: a paper support part having first and second paper support parts(21,22) and paper inlet part between the first and second paper support parts; a first roller(31) which is exposed to the upper side of the second paper support part through an opening at the second paper support part; a cutter(41) for shredding paper; a motor for driving the first roller and cutter. The paper support part has a paper accumulation sensor(52) for determining paper accumulation.

Description

Paper shredder and paper shredding method {A PAPER SHREDDER AND A METHOD FOR SHREDDING A PAPER}

The present invention relates to a paper shredder and a paper shredding method.

Paper shredder is a device for quickly and safely shredding away unnecessary documents or documents that require secret.

Paper shredders can be shredded by manually inserting paper or by automatically feeding a large amount of paper using an automatic paper feed system. In particular, when a sheet of paper is automatically fed and shredded using an automatic paper feed system, a paper shredder or paper jam may occur due to a paper wrinkle or tearing problem. There is.

In general, the paper fed into the paper shredder is different from the paper put into the apparatus such as a copier, the damage caused by the long-term use is often not smoothly operated in many cases.

The present invention provides a paper shredder and paper shredding method having a novel structure.

The present invention provides a paper shredder and a paper shredding method capable of reducing failures occurring in an automatic paper feed system such as paper jams, paper overfeeding, and paper interruption.

The present invention provides a paper shredder and a paper shredding method capable of cutting paper more quickly.

The paper shredder according to the embodiment includes a first paper support having a first length, a second paper support having a second length greater than the first length, and a paper insertion hole between the first paper support and the second paper support. Paper support comprising a; A first roller having a portion exposed to an upper side of the second paper support through an opening formed in the second paper support; A cutter disposed under the paper inlet to crush the introduced paper; And a motor driving the first roller and the cutter, wherein the first paper support part and the second paper support part are lower in height as they are adjacent to the paper inlet.

The paper shredder according to the embodiment includes a paper support including a first paper support and a second paper support, and a paper inlet formed between the first paper support and the second paper support; A plurality of rollers, the portions of which are exposed to an upper side of the second paper support and spaced apart from each other through an opening formed in the second paper support; A cutter disposed under the paper inlet to crush the introduced paper; And a motor for driving the rollers and the cutter.

In the paper shredding method according to the embodiment, a first paper support and a second paper support are formed with a paper inlet interposed therebetween. Shredding by a cutter disposed under the paper feed hole while moving to the paper feed hole; And as the paper of the first group is moved, the paper of the second group is moved to the paper inlet by the second roller, and at the same time, the paper of the first group is moved to the paper inlet by the first roller. And crushed by the cutter.

The present invention can provide a paper shredder and a paper shredding method having a novel structure.

The present invention can provide a paper shredder and a paper shredding method which can reduce the failures generated in the automatic paper feeding system such as paper jams, paper overfeeding, and paper feeding interruption.

The present invention can provide a paper shredder and a paper shredding method capable of cutting paper more quickly.

1 is a perspective view of a paper shredder according to the embodiment.
2 is a perspective view showing a form in which the cover is opened in the paper shredder according to the embodiment.
3 is a cross-sectional view of the paper sedan in the paper shredder according to the embodiment.
4 is a cross-sectional view showing a form in which the cover is opened in the paper shredder according to the embodiment.
5 is a view for explaining the length and angle of the paper support in the paper shredder according to the embodiment.
6 and 7 illustrate an operation example of the paper shredder according to the embodiment.
8 to 10 are diagrams illustrating a paper shredding method of the paper shredder according to the embodiment.
FIG. 11 is a view illustrating shredding paper in a manual manner in a paper shredder according to an embodiment. FIG.
12 and 13 illustrate paper accumulation detection sensors.

Hereinafter, a paper shredder and a paper shredding method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a paper shredder according to the embodiment, Figure 2 is a perspective view showing a form in which the cover is opened in the paper shredder according to the embodiment, Figure 3 is a cross-sectional view of the paper shredder in the paper shredder according to the embodiment, 4 is a cross-sectional view illustrating a form in which a cover is opened in a paper shredder according to the embodiment, and FIG. 5 is a view illustrating a length and an angle of the paper support part in the paper shredder according to the embodiment.

1 to 5, the paper shredder 300 according to the embodiment is a paper box 100 and a paper box disposed below the paper shredder 100 to support the paper shredder 100. 200. The paper cut section 100 is a section to cut the paper as the paper is put, the paper box 200 is a section in which the paper cut in the paper cut section 100 is stored.

1 and 2 illustrate that the paper sedan 100 and the paper box 200 are combined and installed, but the paper box 200 is not necessarily installed. That is, the paper shredder 300 can operate the paper shredder 300 according to the embodiment only, and the paper box 200 stores the paper cut from the paper shredder 100 and the paper shredder. It serves to support 100. For example, after fixing the paper sedan 100 to any device, it is also possible to arrange and use a disposable garbage bag under the paper sedan 100.

In addition, the paper box 200 may include a motor, a control device, an interface, and the like, so that the paper cutout 100 and the paper box 200 may be provided together to be operable.

The paper cut end 100 includes a cover 10 and a paper support 20. Papers to be cut may be disposed in the space between the cover 10 and the paper support 20.

The paper support 20 includes a first paper support 21 and a second paper support 22. The first paper support part 21 and the second paper support part 22 are disposed at both sides of the paper inlet 23.

The first roller 31 and the second roller 32 may be disposed on the paper support 20. That is, a roller may not be disposed in the first paper support part 21, and at least one roller is disposed in the second paper support part 22. In the embodiment, the roller is not disposed on the first paper support 21, and the first roller 31 and the second roller 32 are disposed on the second paper support 22.

The sum of the first effective distance A of the first paper support 21 and the second effective distance B of the second paper support 22 is substantially equal to the paper length of A4 size or letter size, which is a paper standard. It may be formed identically or similarly.

In addition, twice the distance C from the paper inlet 23 to the cutter 41 is equal to the second effective distance B of the second paper support 22 from the center of the second roller 32. It may be formed substantially the same or similar to the distance (D) to the end, and may be designed to have a deviation of 20% or less. In this case, more efficient paper transfer and shredding are possible.

That is, twice the first effective distance A of the first paper support 21, the distance C from the paper inlet 23 to the cutter 41, and the paper from the paper inlet 23. When the distance BD to the second roller 32 is added, it may be formed substantially the same as or similar to the paper length of A4 size or letter size, which is a paper standard, and may be designed to have a deviation of 20% or less.

The first roller 31 and the second roller 32 have a rotating shaft disposed below the second paper support 22, and a part of the first roller 31 and the second roller 32 is opened through the opening formed in the second paper support 22. It is exposed to the upper side of (22). The first roller 31 and the second roller 32 are rotated in the first direction so that the paper can be moved in the direction in which the paper inlet 23 is disposed. For example, in the structure illustrated in FIGS. 3 to 5, the first direction may be counterclockwise, and the first roller 31 and the second roller 32 are rotated counterclockwise while the paper is rotated. It can be transferred to the paper inlet (23).

As the first roller 31 and the second roller 32 rotate, the paper disposed on the first paper support 21 and the second paper support 22 is disposed on the paper inlet 23. While the part is folded, it is introduced into the paper inlet 23.

The first roller 31 and the second roller 32 may be formed of a rubber material or a pin may be formed in contact with the paper so that the frictional force of the surface in contact with the paper is increased.

The cutter 41 is disposed below the paper inlet 23. The cutter 41 serves to crush the paper introduced through the paper inlet 23.

In addition, a paper input sensor 51 may be disposed between the paper input port 23 and the cutter 41. The paper input sensor 51 detects whether paper is input through the paper input port 23, so that the cutter 41 does not rotate when paper is not input to the paper input port 23. . For example, the paper input detection sensor 51 may be formed as an optical sensor including a light emitting unit and a light receiving unit disposed at both sides of the paper input opening 23.

The motor 61 is disposed below the paper support 20. The motor 61 drives the cutter 41, the first roller 31, and the second roller 32 as power is applied. The motor 61, the cutter 41, the first roller 31, and the second roller 32 may be connected to gears or belts, respectively, so that rotational force generated by the motor 61 may be transmitted. The transmission method of the rotational force can be designed in various ways.

A paper accumulation sensor 52 may be formed in the first paper support 21. The paper accumulation sensor 52 detects whether there is paper accumulated on the first paper support 21, and when a paper does not accumulate on the first paper support 21, a predetermined time elapses. After the cutter 41 and / or the first and second rollers 31 and 32 are not rotated.

12 and 13 are diagrams illustrating a paper accumulation sensor.

12 and 13, the paper accumulation sensor 52 includes a sensor bracket 521, a rotation lever 522 and a sensor unit 523 installed and supported on the sensor bracket 521. . 12 and 13 illustrate the rotation lever 522 and the sensor unit 523 separated from the sensor bracket 521 for convenience of understanding.

The rotation lever 522 includes a contact portion 522a, a shield 522b, a weight 522c, and a rotation shaft 522d.

A portion of the contact portion 522a protrudes above the first paper support portion 21 so that when the paper is disposed on the first paper support portion 21, the contact portion 522a is centered on the rotation shaft 522d by the force of the paper. Will rotate. The rotation shaft 522d is rotatably coupled to the sensor bracket 521.

The shield 522b is coupled to the rotation shaft 522d. In an embodiment, the contact portion 522a and the shield portion 522b are disposed in opposite directions about the rotation shaft 522d.

The shield 522b is disposed between the light emitter 523a and the light receiver 523b of the sensor 523 to shield the light emitted from the light emitter 523a from entering the light receiver 523b. . When the shielding portion 522b is disposed between the light emitting portion 523a and the light receiving portion 523b and when the shielding portion 522b is not disposed between the light emitting portion 523a and the light receiving portion 523b. A difference is generated in the signal detected by the sensor unit 523 to detect whether paper is disposed on the first paper support 21.

The weight 522c is coupled to both ends of the rotation shaft 522d. When the weight 522c is not placed on the first paper support 21, the weight 522c is moved to the lowest position by gravity, so that the shield 522b The light emitting unit 523a is disposed between the light receiving unit 523b. In addition, when the weight 522c is disposed on the first paper support 21, the weight 522c rotates about the rotation shaft 522d while the contact portion 522a is pressed. Accordingly, the shielding portion 522b is not disposed between the light emitting portion 523a and the light receiving portion 523b.

In the paper accumulation sensor 52 according to the embodiment, the rotary lever 522 operates by direct contact with the paper, and accordingly the optical signal detected by the sensor unit 523 is detected to determine whether the paper is disposed. .

In another embodiment, the paper accumulation sensor 52 may be disposed on the first paper support 21 and / or the second paper support 22, and in another embodiment, the paper accumulation sensor ( 52 may be provided as an optical sensor including a light emitting part and a light receiving part disposed above and below the first paper support part 21 and / or the second paper support part 22. In this case, foreign matters such as a stake may accumulate between the light emitting unit and the light receiving unit, so that the sensor may not operate normally. If one sheet of paper is disposed, the light emitted from the light emitting unit easily penetrates the paper, causing the optical sensor to malfunction. There is also.

In addition, the paper input detection sensor 51 may be formed to include a rotation lever and a sensor unit, similar to the paper accumulation detection sensor 52.

The signal detected by the paper input sensor 51 and the paper accumulation sensor 52 is transmitted to the controller 70. The controller 70 may operate the cutter 41 and / or the first and second rollers 31 and 32 according to signals transmitted from the paper input sensor 51 and the paper accumulation sensor 52. To control.

The cover 10 is disposed above the paper support 20, and one side of the cover 10 is rotatably coupled to the paper support 20. That is, the cover 10 is provided to open and close as shown in FIGS. 1 and 2.

As shown in FIG. 2, the cover 10 has a pressing protrusion 16a and a micro switch 16b is formed at one side of the paper cut end 100 corresponding to the pressing protrusion 16a. The pressing protrusion 16a presses the micro switch 16b as the cover 10 is closed. Therefore, the controller 70 may detect a signal indicating whether the cover 10 is in an open state or a closed state, and thus the operation of the paper cutout 100 may be sensed through the micro switch 16b. Can be controlled. For example, the paper sedan 100 may be operated only when the cover 10 is closed.

The cover 10 includes a first press unit 12 and a second press unit 14. The first press unit 12 is disposed above the first paper support 21 and is elastically supported by the spring 13. The second press unit 14 is disposed above the second paper support 22 and elastically supported by the spring 13.

The first press unit 12 and the second press unit 14 press the paper disposed on the paper support 20 so that the paper is rotated appropriately as the first and second rollers 31 and 32 are rotated. By so that it can be smoothly introduced into the paper inlet (23).

The first press unit 12 and the second press unit 14 are recessed first evacuation grooves 12a in portions corresponding to the first and second rollers 31 and 32 and the paper accumulation sensor 52. ) And second evacuation grooves 14a and 14b are formed. The first evacuation grooves 12a and the second evacuation grooves 14a and 14b prevent excessive frictional force between the first and second rollers 31 and 32 and the paper accumulation sensor 52 and paper. The first and second rollers 31 and 32 may have a curved surface along the shape of the first and second rollers 31 and 32. This allows the paper to be conveyed effectively.

The first evacuation groove 12a disposed on the paper accumulation sensor 52 is a contact portion 522a of the paper accumulation detection sensor 52 when paper is not disposed on the first paper support 21. Is pressed by the first press unit 12 to prevent the paper cutout 100 from malfunctioning.

In addition, the cover 10 may be further formed with a manual paper inlet (11). The manual paper inlet 11 is disposed in the upper direction of the paper inlet 23 so that the user can directly insert a small amount of paper.

In the embodiment, the first paper support 21 is formed at the first effective distance A from the paper inlet 23 and the second paper support 22 is the first effective distance from the paper inlet 23. It is formed with the 2nd effective distance B larger than (A). That is, the first paper support 21 and the second paper support 22 are formed in an asymmetrical length with respect to the paper inlet 23.

In addition, in the exemplary embodiment, the first paper support part 21 is formed at a first inclination θ1 with respect to a horizontal plane, and the second paper support part 22 is formed of a material smaller than the first inclination θ1 with respect to the horizontal plane. It is formed with two inclinations θ2. That is, the first paper support 21 and the second paper support 22 have inclined surfaces of different angles. For example, the height of the first paper support portion 21 rapidly decreases as it is adjacent to the paper inlet 23 from the end, but as the second paper support portion 22 is adjacent to the paper inlet 23 from the end. The height is reduced gently. In addition, the first slope θ1 may be smaller than the second slope θ2.

That is, in the embodiment, the paper support part 20 is different in angle and / or length on both sides of the paper inlet 23 and is formed in a substantially asymmetrical V shape or Y shape.

In general, printers and faxes must be supplied without wrinkles from one end to the other end when paper is fed to the next process after feeding so that paper is fed to the purpose of printing or copying. This does not matter if the paper is wrinkled or folded. In particular, since the paper for the purpose of shredding is damaged by being exposed to moisture for a long time and being warped or wrinkled or torn, the paper is controlled from the end of the paper to be introduced into the paper inlet 23 from the end of the paper. It is not easy to crush.

Therefore, the paper shredder 300 according to the embodiment forms asymmetrically the shape of the paper support 20 so that the supplied paper can be introduced into the paper inlet 23 in an asymmetrically folded state.

6 and 7 are diagrams illustrating an operation example of the paper shredder according to the embodiment.

6 and 7, the paper shredder according to the embodiment opens the cover 10 so that the paper support 20 is exposed by rotating the cover 10 as shown in FIG. Then, a large amount of paper (P) is disposed on the paper support 20.

In addition, when the cover 10 is closed, the push protrusion 16a detects a signal generated by pressing the micro switch 16b, and detects a signal from the paper accumulation sensor 52 so as to detect the paper shredder ( 300 may be operated.

When the first and second rollers 31 and 32 are rotated, the first group of paper adjacent to the first and second rollers 31 and 32 of the large amount of paper P, i. First and second rollers 31 and 32 receive the rotational force and are introduced into the paper inlet 23. The first group of paper may be one sheet of paper disposed at the bottom of the large amount of paper P, or may be two to four sheets of paper. That is, the number of sheets simultaneously moved may vary depending on the characteristics of the first and second rollers 31 and 32 or the state of the sheets.

As the first and second rollers 31 and 32 rotate, the large amount of paper P is forced to move in the left direction, and the large amount of paper P is moved by the blocking wall 21a of the first paper support 21. The paper P is not moved in the left direction, and the paper P disposed at the portion where the paper inlet 23 is formed is folded into the paper inlet 23.

In addition, since the height of the portion where the paper inlet 23 is formed is lower than that of the first paper support 21 and the second paper support 22, the papers P are the portions where the paper inlet 23 is formed. While the portion corresponding to the folding is introduced into the paper inlet 23 is crushed by the cutter (41).

At this time, the first group of paper to be introduced is asymmetrically folded, first is moved by the force by the first and second rollers (31, 32), the paper is the paper inlet 23 As it is folded in, it is forced by the first roller 31 and flows into the paper inlet 23. Of course, when a part of the paper flows into the cutter 41, the paper may be pulled by the force of the cutter 41 in addition to the force applied from the first and second rollers 31 and 32. It may be introduced into the inlet (23).

When the first and second rollers 31 and 32 are rotated, the paper P disposed on the first paper support 21 is not folded into the paper inlet 23 and the second paper support 22 Paper P disposed in the) is folded into the paper inlet (23). That is, the paper P disposed on the second paper support part 22 is folded at the paper inlet 23 and moved in the direction in which the cutter 41 is disposed.

At this time, the length of the paper P disposed on the second paper support 22 is reduced by twice the distance C from the paper inlet 23 to the cutter 41. In other words, the paper P disposed on the second paper support 22 is folded in two layers and moved in the direction in which the cutter 41 is disposed.

Therefore, the end of the paper disposed on the second paper support 22 at the time when the first group of paper is cut by the cutter 41 passes through the second roller 32 and the paper inlet 23. Is moved in the direction.

On the other hand, since the second roller 32 continues to rotate, the second roller 32 is secondary while applying force to the first group of papers to which the first roller 31 is primarily fed. A force is applied to the paper of the second group which is injected into. That is, while the first roller 31 is pushing the paper of the first group to be first input, the second roller 32 is secondly placed on the first paper to be fed The second group of paper is pushed out.

In addition, since the paper of the second group which is added secondarily is subjected to the force according to the movement of the paper of the first group that is firstly introduced, the paper may be directly affected by only the second roller 32. It can be moved smoothly to the inlet (23).

Therefore, since the paper of the second group that is added second is introduced into the paper inlet 23 at the same time, while the paper of the first group to be introduced into the paper inlet 23 is introduced into the paper inlet 23 at the same time, It is possible to crush paper quickly.

8 to 10 are views illustrating a paper shredding method of the paper shredder according to the embodiment. In the paper shredding method of FIGS. 8 to 10, for convenience of explanation, the paper is exemplified by the first and second rollers 31 and 32 to be moved one by one without moving several sheets at the same time. However, in the actual paper shredder, one to four sheets of paper may be moved together depending on the friction force between the sheets.

In an embodiment, the effective distance A of the first paper support part 21 may be formed to have a length of 1/5 to 1/3 of a paper length of A4 size, which is a paper standard. For example, A4 size paper has a length of 297 mm, and the effective distance A of the first paper support 21 may be 59.4 mm to 99 mm. Of course, the effective distance of the first paper support 21 is not limited to the above-described range, for example, may be smaller than the length of 59.4mm, may be larger than the length of 99mm.

In addition, in the embodiment, the effective distance A of the first paper support part 21 may be formed to have a length of 1/5 to 1/3 of the length of a letter size paper that is a paper standard. For example, letter-sized paper has a length of 279.4 mm, and the effective distance A of the first paper support 21 may be 55.9 mm to 93.2 mm. Of course, the length of the first paper support portion 21 is not limited to the above-mentioned range, for example, may be smaller than the length of 55.9mm, may be larger than the length of 93.2mm.

FIG. 8 is a view for explaining that when the effective distance A of the first paper support 21 is set to 99 mm, the paper is cut into the paper inlet 23 while being cut.

In the paper shredder 300 according to the embodiment, when a plurality of pieces of paper are disposed in the paper support 20, the number of layers of the paper being simultaneously shredded is changed according to the initial stage, the rated stage, and the late stage of the stage.

For example, at the beginning of the sedan, the first sheet of paper (P1) is folded, and at the same time, two layers of paper are sewn and then divided into four and three layers, and then folded into a rated sedan, which is consistent with five, four and three layers. The sedan is formed in a cycle, and the sedan is divided into two layers and one layer as it enters the latter stage.

When the paper shredder 300 is operated while a plurality of papers are disposed on the paper support 20, the first sheet of paper P1 disposed on the second paper support 22 is the first and second papers. Under the force of the rollers (31, 32) is folded into the asymmetrical V-shape while entering the paper inlet (23) to start the sedan. At this time, the first sheet of paper P1 is crushed in two layers.

First sheet of paper P1 disposed in the direction of the first paper support 21 with respect to the center line of the paper inlet 23 at the time when the first sheet of paper P1 is crushed by the cutter 41. The length of is equal to the sum of the effective distance (A) of the first paper support 21 and the distance (C) from the center of the paper inlet 23 to the cutter 41, the paper inlet 23 The length of the first sheet of paper P1 disposed in the direction of the second paper support 22 with respect to the center line of the center of the paper inlet 23 at the effective distance B of the second paper support 22. It is equal to the value obtained by subtracting the distance C from the cutter 41 to.

When the first sheet of paper P1 starts to be crushed by the cutter 41, the first sheet of paper P1 is disposed on the first paper support 21 by a pulling force of the cutter 41. Also introduced into the paper inlet (23).

As the first sheet of paper P1 is moved in the direction of the paper inlet 23 on the paper support 20, the second roller 32 comes into contact with the second sheet of paper P2, and the second sheet of paper The paper P2 is forced by the second roller 32 and flows into the paper inlet 23 to start cutting. At this time, the first sheet of paper (P1) and the second sheet of paper (P2) disposed in the direction of the first paper support portion 21 on the basis of the center line of the paper inlet 23 and the paper inlet (23) The first sheet of paper P1 and the second sheet of paper P2 disposed in the direction of the second paper support 22 are simultaneously shredded and four layers of paper are crushed.

The lengths of the first paper support 21 and the second paper support 22 are different from each other, and the cutter 41 is formed from the effective distance A of the first paper support 21 and the center of the paper inlet 23. The value C plus the distance C) is greater than the effective distance B of the second paper support 22 minus the distance C from the center of the paper inlet 23 to the cutter 41. Since it is small, the first sheet of paper P1 disposed on the first paper support 21 is formed before the first sheet of paper P1 disposed on the second paper support 22. 23 is introduced and crushed.

As the first sheet of paper P1 disposed on the first paper support 21 is crushed, the first and second rollers 31 and 32 are rotated on the first paper support 21. Only the second sheet of paper P2 flows into the paper inlet 23 and is cut, the second sheet of paper P2 disposed on the first paper support 21, and the second paper support 22. As the first sheet of paper P1 and the second sheet of paper P2 disposed on the sheet are simultaneously shredded, three layers of paper are crushed.

In the same manner, the second roller 32 is in contact with the third sheet of paper P3 as the second sheet of paper P2 is moved in the direction of the paper inlet 23 on the paper support 20. The third sheet of paper P3 is forced by the second roller 32 and flows into the paper inlet 23 to start cutting. At this time, the second sheet of paper (P2) and the third sheet of paper (P3) disposed in the direction of the first paper support portion 21 on the basis of the center line of the paper inlet 23 and the paper inlet (23) The first sheet of paper (P1), the second sheet of paper (P2), and the third sheet of paper (P3), which are disposed in the direction of the second paper support unit 22 with respect to the center line of the paper, are simultaneously shredded and stacked in five layers of paper. Is crushed.

In the above manner, the first and second rollers 31 and 32 are sequentially in contact with the papers so that the paper is introduced into the paper inlet 23, and the cutter 41 according to the degree of overlap of the papers. In shredding the paper to 1 to 5 layers. Of course, in the embodiment, it is assumed that only one sheet of paper is moved when the paper and the first and second rollers 31 and 32 are in contact with each other, but in some cases, two or three sheets of paper may be moved at the same time. The number of layers of paper being sewn at the same time may vary.

9 is a view for explaining that when the length A of the first paper support 21 is set to 74.3mm, the paper is cut as it flows into the paper inlet 23, Figure 10 is the first paper support When the length A of 21 is set to 59.4 mm, it is a figure explaining that paper is cut into the paper inlet 23 as it flows in.

9 and 10, the effective distance A of the first paper support 21 and the distance C from the center of the paper inlet 23 to the cutter 41 are equal to each other. The shorter the paper is, the faster the paper is inserted into the paper inlet 23 and at the same time the number of sheets of paper being cut is also increased.

11 is a view for explaining the shredding paper in a manual manner in the paper shredder according to the embodiment.

The manual paper inlet 11 penetrating the cover 10 is formed in the cover 10 in an upward direction of the paper inlet 23. The manual paper feed opening 11 is disposed between the first press unit 12 and the second press unit 14.

Therefore, when paper is introduced through the manual paper feed opening 11, the paper is crushed by the cutter 41 through the paper feed opening 23. At this time, the paper input sensor 51 detects the paper, and accordingly the controller 70 controls the cutter 41 to operate.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiment can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

10: cover, 11: manual paper feed opening, 12: first press unit, 12a: first evacuation groove, 13: spring, 14: second press unit, 14a, 14b: second evacuation groove, 16a: push projection, 16b : Micro switch, 20: paper support, 21: first paper support, 22: second paper support, 23: paper input port, 31: first roller, 32: second roller, 41: cutter, 51: paper input detection sensor , 52: paper accumulation sensor, 61: motor, 70: controller, 100: paper sedan, 200: paper box, 521: sensor bracket, 522: rotary lever, 522a: contact, 522b: shield, 522c: weight 522d: rotation axis, 523 sensor unit, 523a light emitting unit, 523b light receiving unit

Claims (14)

A paper including a first paper support having a first effective distance, a second paper support having a second effective distance greater than the first effective distance, and a paper inlet between the first paper support and the second paper support; Support;
A first roller having a portion exposed to an upper side of the second paper support through an opening formed in the second paper support;
A cutter disposed under the paper inlet to crush the introduced paper; And
It includes a motor for driving the first roller and the cutter,
And a paper shredder having a lower height as the first paper support part and the second paper support part are adjacent to the paper inlet. The method of claim 1,
The paper shredder further comprises a second roller spaced apart from the first roller and partially exposed through the opening formed in the second paper support. A paper support part including a first paper support part and a second paper support part, the paper support part including a paper inlet formed between the first paper support part and the second paper support part;
A plurality of rollers, the portions of which are exposed to an upper side of the second paper support and spaced apart from each other through an opening formed in the second paper support;
A cutter disposed under the paper inlet to crush the introduced paper; And
Paper shredder comprising a motor for driving the rollers and the cutter. The method of claim 3, wherein
And the rollers include a first roller adjacent the paper inlet and a second roller spaced apart from the first roller. The method according to claim 2 or 4,
The first roller is a paper shredder disposed closer to the paper inlet than the second roller. The method according to claim 1 or 3,
Paper shredder is disposed on the paper support portion paper accumulation sensor for determining whether the paper accumulation. The method of claim 6,
The paper accumulation sensor is a portion of the paper through the paper support portion exposed to the paper support portion is rotated as the paper accumulates, and a sensor for detecting whether the paper accumulated by detecting whether the rotation lever is rotated or not Paper Shredder Including Wealth. The method according to claim 1 or 3,
Paper shredder further comprises a cover disposed on the paper support. The method of claim 8,
A paper shredder comprising a first press unit coupled to the cover and elastically supported, the second press unit disposed on the first paper support and the second press unit disposed on the second paper support. The method of claim 9,
And a manual paper feeder penetrating the cover and disposed between the first press unit and the second press unit. The method of claim 9,
A paper shredder comprising evacuation grooves formed in the first press unit and the second press unit. The method of claim 3, wherein
And said first paper support portion has a first effective distance and said second paper support portion has a second effective distance greater than said first length. The method of claim 3, wherein
And a paper shredder having a lower height as the first paper support part and the second paper support part are adjacent to the paper inlet. A first paper support part and a second paper support part are formed with a paper inlet interposed therebetween, and the first group of paper is moved to the paper inlet by the first roller and the second roller disposed on the second paper support part. Crushed by a cutter disposed below the inlet; And
As the paper of the first group is moved, the paper of the second group is moved to the paper inlet by the second roller, and at the same time, the paper of the first group is moved to the paper inlet by the first roller. Paper shredding method comprising the step of crushing by a cutter.

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