JP3690708B2 - shredder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shredder for finely cutting paper or the like.
[0002]
[Prior art and problems to be solved by the invention]
As is well known, shredders cut paper or the like finely or very finely and are widely used in offices and the like regardless of individuals or corporations. As a general form of shredder use, one unit is installed on one floor, and multiple users have shared it. In recent years, a small shredder is placed beside the desk, and one user can use it. The form of personal use almost alone is also increasing. Such a form of use is very convenient because it does not have the trouble of going to the place where the shared shredder is installed by holding paper to be cut.
[0003]
In addition, as a general shredder structure, regardless of whether it is large or small, finely cut waste (hereinafter referred to as chips) is stored in a container (hereinafter referred to as a chip basket) inside the apparatus body, and a predetermined amount of chips are stored. The chip basket is taken out from the shredder when it accumulates and the chips are discarded. However, because the work of throwing away the chips is cumbersome, even if the chip basket is full and the chips cannot be used without being thrown away once, the chips are compressed by hand to reduce the apparent volume. In many cases, it continues to be used as it is reduced. If the chip basket is completely removed from the shredder to compress the chip, there is no particular problem. However, it is troublesome to take out the chip basket, and the chip is compressed by putting a hand through the garbage opening. There are times to try. In addition, there is a case where hands are put in play, regardless of compressing the chip. In such a case, there is a high possibility that the hand touches the cutter or the mouth of the clothes is caught in the cutter, resulting in serious injury. Such a risk is very high in a small type in which the cutter unit is separated and independent, and the type in which the cutter unit is simply mounted on the chip basket is used.
[0004]
Therefore, the present invention has an object of providing a safe shredder that does not cause injury by touching a cutter even if a person puts a hand through a garbage inlet, regardless of the type. To do.
[0005]
[Means for Solving the Problems]
Among the shredders of the present invention, according to the first aspect of the present invention, in order to achieve the above-mentioned object, a cutter part having a built-in cutter is arranged on the apparatus main body, and paper scraps or the like finely cut by the cutter part in the apparatus main body In a shredder equipped with a container for storing waste, the device main body has an opening / closing door on the front side, and an opening leading to the device main body is provided at the upper end of the opening / closing door so that dust can be put into the container In addition, a means for opening and closing a dropping path for paper scraps cut by the cutter is disposed between the apparatus main body and the cutter unit, and the opening and closing of the opening and closing door and the opening and closing of the dropping path are provided. A means for interlocking closing and opening of the means is provided, and the means for opening and closing the dropping path can be closed regardless of the interlocking means in a state in which the opening and closing door is closed.
[0006]
Shredder according to the second aspect, in order to achieve the above object, the opening and closing means of the drop under route is comprised between an open position of the hanging state and a closed position in the horizontal state from a pair of shutter blades rotatable The pair of shutter blades are arranged so as to face each other, and the tips of both shutter blades are overlapped at the closed position in the horizontal state .
[0007]
In order to achieve the above object, in the shredder according to the third aspect of the present invention, the interlock means rotates a gear device that rotationally drives the shutter blade on the front side, a cam device that rotationally drives the gear device, and the cam device And a means for rotating and energizing the shutter blade on the front side so as to take the closed position in the horizontal state, and the gear device is a driven gear that rotates integrally with the rotating shaft of the shutter blade; A drive gear pivotally supported so as to mesh with the driven gear, and the cam device is provided on the inner side of the container or the open / close door with the cam plate supported coaxially with the drive gear of the gear device. It consists of the member which rotates a cam plate, It is characterized by the above-mentioned.
[0008]
In order to achieve the above object, the shredder according to claim 4 is configured such that the driven gear of the gear device has teeth corresponding to an angle between the horizontal position of the shutter blade and the open position of the drooping state. and wherein the Rukoto to have a.
[0009]
In order to achieve the above object, the shredder according to claim 5 is provided with an introduction portion having a tapered introduction port in which a member for introducing an object to be cut such as paper into the cutter is narrower on the lower side than on the upper side. consists concave receiving section located above the introduction portion, the concave receiving portion, the top surface of the cutter portion Rukoto which have a shape that has spread in the entire circumferential direction from the upper side opening of the inlet port Features.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of an embodiment of a shredder according to the present invention, and FIG. 2 is a sectional view thereof. As shown in the figure, the shredder according to the present embodiment has a rectangular parallelepiped vertical apparatus body 1 with a cutter 2 mounted thereon, and a front door 3 on the front side of the apparatus body 1 can be opened and closed with a side edge hinge (see FIG. (Not shown). The caster 4 is provided on the bottom surface of the apparatus main body 1 so that the entire shredder can be easily moved on the floor surface.
[0012]
The cutter unit 2 opens a paper insertion slot 6 on the upper surface cover 5, and includes an operation panel 7 and a power switch 8. On the left and right side surfaces of the upper surface cover 5, recesses 9 (in the drawing, serving as transport handles). Only the right side is shown.) A cutter 10 composed of a pair of substantially cylindrical blades and a motor 11 that rotationally drives the cutter 10 are supported and fixed inside the upper surface cover 5 by a frame 12 and an intermediate plate 13 of the cutter unit 2. A portion of the intermediate plate 13 that supports the cutter 10 is provided with an introduction member 15 having a tapered paper introduction port 14 that is cut out at a part of the upper surface portion and narrows the lower side from the upper side, and the bottom is opened. Then, the chip cut by the cutter 10 can be dropped into the chip basket 16 in the apparatus main body 1. The chip basket 16 is a combination of wires, and a garbage bag such as a plastic bag is attached to the inside during actual use.
[0013]
The sheet insertion port 6 includes the introduction member 15 described above and a chip receiving recess 5 a formed integrally with the upper surface cover 5 of the cutter unit 2. Since this type of shredder is generally made of a resin for the top cover 5, it easily bends when a person gets on it or sits on it, and the top cover 5 is too close to the cutter 10 to be dangerous. The chip receiving recess 5a is kept away from the cutter 10 by providing the introduction member 15 made of a rigid member.
[0014]
Further, the chip receiving recess 5a has a track-like planar shape for track and field and a substantially semicircular cross-sectional shape, and 1/4 spherical portions are provided at both ends of the portion along the longitudinal direction of the cutter 10, respectively. It is wider than the normal plane area of the paper inlet 6 of the shredder. For this reason, as shown in FIG. 3, for example, when the paper 17 to be cut by reversing the cutter 10 due to a paper jam is pulled out above the paper inlet 6, the chips 17 a scattered from the lower end of the paper 17 are almost spilled. Without being received in the chip receiving recess 5a. Of course, various shapes other than the illustrated example can be adopted as the shape of the paper slot 6.
[0015]
As described above, the bottom of the portion of the intermediate plate 13 that supports the cutter 10 and the motor 11 that covers the cutter 10 is open, but a shutter device 18 is provided below the bottom. As shown in FIGS. 4 to 8, the shutter device 18 includes a pair of shutter blades 19, 19 and a shutter opening / closing mechanism 20 for driving the shutter blades 19 and 19 so as to interlock with each other. Each shutter blade 19 includes a blade portion 21 having a rectangular plate shape and a tapered cross-sectional shape in plan view, and a shaft portion 22 having a circular cross-sectional shape. As shown in FIG. 7, the tip portion of the blade portion 21 overlaps so that the tip falling from the cutter 10 does not fall into the apparatus main body 1. In the figure, reference numeral 23 denotes a urethane sheet material serving as a stopper for regulating the upward rotation position of the shutter blade 19.
[0016]
The shutter opening / closing mechanism 20 is fixed to the gear portion 24 formed at the end portion of the shaft portion 22 of the front shutter blade 19, the gear 25 that can mesh with the gear portion 24, and the end portion of the support shaft 25 a of the gear 25. A cam plate 26 that rotates integrally, a spring 27 that urges the cam plate 26 to rotate in a fixed direction, a pulley 28 that is provided on the support shaft 25a of the gear 25 on the opposite side of the gear 25, and a rear side The pulley 29 attached to the end of the shaft portion 22 of the shutter blade 19, the timing belt 30 wound around the pulleys 28, 29, and the front door for interlocking the opening and closing of the shutter blade 19 with the opening and closing of the front door 3 3 and a push plate 31 provided on the inner side of 3. The gear portion 24 at the end of the shaft portion 22 of the shutter blade 19 is provided with teeth of 90 degrees around the shaft center as shown in FIG. The spring 27 urges the cam plate 26 to rotate clockwise in FIGS. In the figure, 32 and 33 are support plate members for attaching the shaft portion 22 of the shutter blade 19 to the frame 12 of the cutter portion 2, and the side to which the gear 25, the cam plate 26, etc. are attached (left side in FIGS. 4 and 5). The support plate member 33 is larger than the support plate member 32 on the other side as shown in FIGS. 5 and 6 so that the upper end of the spring 27 can be fixed.
[0017]
As shown in FIG. 2, the front door 3 has a wedge-shaped cross-sectional shape that widens upward, and opens an upper portion that protrudes relatively large from the front surfaces of the apparatus main body 1 and the cutter unit 2 and opens a dust inlet 34. It is as. In addition, the dust inlet 34 is integrally formed with a slope portion 35 for allowing the dust to smoothly slide down to the tip basket 16 inside the front surface. The slope portion 35 is inclined downward while slightly curving from a slightly recessed portion 36 at a position directly below the upper opening of the dust inlet 34 to form a eaves portion 37 at the lower end closest to the tip basket 16. It is. For this reason, the dust inlet 34 has an opening size that is slightly thinner than the thickness of the front door 3, so that it is possible to input a large garbage, for example, a paper garbage just rolled up. In addition, because of the eaves portion 37, the waste introduced from the upper opening 34 a of the waste introduction port 34 may fall between the apparatus main body 1 and the front door 3 after finishing dropping on the slope portion 35. Without falling into the tip basket 16 from the lower opening 34b of the dust inlet 34. Note that the portion 36 also serves as a handle by placing a finger on the step.
[0018]
In the illustrated example, the chip basket 16 is sized to protrude slightly from the apparatus main body 1 to the front door 3 side, and the eaves portion 37 is positioned inside the apparatus main body side surface of the front door 3. By reversing this relationship, the tip basket 16 is sized so that the inside of the apparatus main body 1 can be completely accommodated, and the tip of the eaves portion 37 is flush with or protrudes from the apparatus main body side of the front door 3. Good.
[0019]
By the way, there is no member constituting the back surface of the front door 3 on the apparatus main body side 1 of the portion used as the dust input port 34 of the front door 3, and the front surface portion 12 a of the frame 12 of the cutter unit 2 is connected to the dust input port 34. The lower opening 34 b is left between the dust inlet 34 and the cutter 10 in the cutter unit 2. In the illustrated example, as shown in FIG. 2, the cutter 10 and the upper opening 34 a of the dust inlet 34 are in a substantially horizontal positional relationship, and the lower end of the front surface portion 12 a of the frame 12 is below the lower end of the cutter 10. It is arranged to be located. In this way, the position of the upper opening 34a of the dust inlet 34 becomes higher and it becomes easier to put in the dust, and even if the shutter device 18 is not provided, a person puts a hand through the dust inlet 34. However, the hand will not reach the cutter 10, and the risk of injury will be extremely small. In addition, if the lower end of the front surface part 12a of the frame 12 is positioned below the cutter 10, the positional relationship between the cutter 10 and the upper opening 34a of the dust inlet 34 may not be horizontal. Further, instead of the front surface portion 12 a of the frame 12, the intermediate plate 13 or a separately provided blocking member may have the above-described relationship with the cutter 10 and the dust inlet 34.
[0020]
Next, the interlocking operation of the opening / closing of the front door 3 and the opening / closing operations of the shutter blades 19 and 19 will be described. FIG. 7 shows a state where the shutter blades 19 and 19 are closed because the front door 3 is opened. Since the cam plate 26 is free in this state, the cam plate 26 is rotated to the right in the drawing by the urging force of the spring 27, and the gear portion 24 of the shaft portion 22 of the front shutter blade 19 located on the left side in the drawing is the gear. 25, the front shutter blade 19 is rotated upward (to the left in the drawing) to a position that is substantially horizontal as shown in the figure, and stops by hitting the urethane sheet material 23. In addition, the timing belt 30 is driven as the cam plate 26 rotates, and the rear shutter blade 19 rotates rightward in the drawing, and the front end of the timing belt 30 stops on the front end of the front shutter blade 19 and overlaps. ing. That is, if the tip falls from the cutter unit 2 side with the front door 3 opened and the tip basket 16 taken out, it will be scattered in the apparatus main body 1 and it will take time for cleaning. The fall of the chip is almost completely stopped by the overlap.
[0021]
When the front door 3 is closed from this state, the push plate 31 enters the lower side of the cam plate 26 and pushes the cam plate 26 up counterclockwise against the urging force of the spring 27. Then, since the gear portion 24 of the shaft portion 22 of the shutter blade 19 is provided only in the range of 90 degrees, it does not mesh with the gear 25, and the front shutter blade 19 is rotated downward by its own weight from the horizontal state (right rotation in the figure). Then, it hangs vertically downward to the state shown in FIG. Further, the timing belt 30 is driven with the rotation of the cam plate 26, and the rear shutter blade 19 rotates counterclockwise in the figure, which also hangs vertically downward to the state shown in FIG. As a result, the shutter is opened, and the chip cut by the cutter 10 and the chip placed on the shutter blade 19 in a closed state can be dropped into the chip basket 16 in the apparatus main body 1 here. . Note that the push plate 31 can be provided not at the front door 3 but at an appropriate portion of the chip basket 16.
[0022]
In the state shown in FIG. 8, since the shaft portion 22 of the front shutter blade 19 is in a free state, the front shutter blade 19 freely rotates between the horizontal state in FIG. 7 and the suspended state in FIG. it can. For this reason, when a person puts his hand through the dust inlet 34 and tries to advance further into the apparatus from the lower opening 34b of the dust inlet 34, the hand first hits the shutter blade 19 on the front side, and the hand enters. Since it is pushed up and covers the lower side of the cutter 10, it is impossible to reach the cutter 10, and therefore there is almost no risk of injury. In this structure, when the shutter unit 2 can be detached from the apparatus main body 1 or can be used alone, when the shutter unit 2 is lifted, the push plate 31 of the front door 3 is not in a state of pushing up the cam plate 26. In the same manner as described above, the shutter blades 19 and 19 are closed, and the cutter 10 can be prevented from being touched by a person or an object.
[0023]
In the state of FIG. 8, the spring 27 is stretched by the rotation of the cam plate 26, and a biasing force is applied to the cam plate 26 so as to rotate rightward in the figure by the spring 27. Therefore, when the front door 3 is opened, the shutter blades 19 and 19 return to the state shown in FIG.
[0024]
In the embodiment described above, the interlocking structure of the door and the shutter is adopted, but it is also conceivable that the chip basket is inserted and removed from the apparatus main body and the shutter is opened and closed. In that case, for example, an appropriate sensor may be provided on the inner side of the bottom of the apparatus main body, and a means capable of triggering the opening / closing of the shutter blade by the output signal of the sensor may be provided. Of course, various interlocking structures can be employed. In the illustrated embodiment, the interior of the front door 3 remains empty and is not used separately. For example, the entire surface of the front door 3 on the apparatus main body 1 side is opened, and a garbage bag is suspended inside. You can also Further, the tip basket 16 can be divided into front and rear, and the chips cut by the cutter 10 can be dropped at the rear portion, and the waste thrown from the dust inlet 34 can be dropped at the front portion.
As described above, if a means for opening and closing the falling path of paper waste cut by a cutter is provided, and the presence or absence of a container for storing paper waste and the opening and closing means of the dropping path are linked, the human hand Will not touch the cutter, so it will not be injured and will be safe.
In addition, a means for opening and closing the falling path of paper scraps cut by a cutter is provided, and the opening and closing of the opening / closing door of the apparatus main body equipped with a container for storing paper scraps and the opening and closing means of the dropping path are interlocked. This will prevent people from putting their hands in contact with the cutter, thus preventing injury and ensuring safety.
In addition, if a pair of rotatable shutter blades that form the opening and closing means of the dropping path are arranged opposite to each other and the tips of both shutter blades overlap in the closed position in the horizontal state, the cutting that drops from the cutter with the container removed The scraped paper does not come out beyond the shutter blade, so that the surroundings can be prevented from becoming dirty.
In addition, the cam device rotates the gear device that rotationally drives the front shutter blade, and the urging means urges the cam device so that the front shutter blade takes the horizontal closed position. The gear device comprises a driven gear that rotates integrally with the rotating shaft of the shutter blade and a drive gear meshing with the driven gear, and the cam device is provided on a cam plate and a container or an opening / closing door that are coaxial with the drive gear of the gear device. If the interlocking means is constituted by a member that rotates the cam plate, it is possible to interlock the opening and closing of the falling path of paper waste and the like cut only by putting in and out the container and opening and closing the door.
Furthermore, if the driven gear of the gear device has teeth corresponding to the angle between the horizontal position of the shutter blade and the open position of the drooping state, the front side can be seen when the shutter blade is in the open position. Since the shutter blade is in a free state and a person puts his hand, the free shutter blade is pushed up, so that it is possible to reliably prevent the hand from touching the cutter even when the shutter blade is open.
Furthermore, if the member for introducing the cut object such as paper into the cutter has a wide concave receiving portion, the cut object such as finely cut paper will be moved outward when the cutter is reversed. No spills and splashes, so you don't get dirty.
[0025]
【The invention's effect】
Shredder according to the present invention, as has been described above, the means for opening and closing the drop path such waste paper was cut by a cutter provided, opening and closing the drop route of door of the apparatus body with a container for storing the paper waste etc. by interlocking the closed opening of the opening and closing means, since the closed can der so that regardless of the interlocking means, to close the door in preparation for or when a hand or the like is inserted in a state where the door of the apparatus main body is closed Even in this state, the opening / closing means of the dropping path can be closed, so that the human hand does not touch the cutter, and thus there is an effect that it is safe without injury.
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment of a shredder according to the present invention.
FIG. 2 is a cross-sectional view of the shredder of FIG.
3 is a perspective view showing a state in which chips are prevented from being scattered in the chip receiving portion of the shredder of FIG. 1. FIG.
4 is a plan view of the shutter device of the shredder of FIG. 1; FIG.
FIG. 5 is a front view of the same.
FIG. 6 is a side view of the same.
7 is a side view of the shutter device of FIG. 4 with a shutter blade closed. FIG.
FIG. 8 is a side view showing a state where the shutter blade is opened.
FIG. 9 is a cross-sectional view showing a gear at the shaft end of the shutter blade.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Cutter part 3 Front door 4 Caster 5 Upper surface cover 5a Chip receiving recessed part 6 Paper slot 7 Operation panel 8 Power switch 9 Recessed part (carrying handle for conveyance)
DESCRIPTION OF SYMBOLS 10 Cutter 11 Motor 12 Cutter part frame 12a Cutter part frame front part 13 Intermediate plate 14 Paper introduction port 15 Introduction member 16 Chip basket 17 Paper 17a Paper cut chip 18 Shutter device 19 Shutter blade 20 Shutter opening / closing mechanism 21 Shutter Blade portion 22 Blade portion shaft 23 Urethane sheet material 24 Gear portion 25 Gear 25a Gear support shaft 26 Cam plate 27 Spring 28, 29 Pulley 30 Timing belt 31 Push plate 32, 33 Support plate material 34 Garbage inlet 34a Upper opening 34b of the garbage inlet Lower opening 35 of the garbage inlet 35 Slope part 36 Recessed part 37 of the slope part Eave part of the slope part

Claims (5)

In a shredder provided with a container that houses a cutter part containing a cutter on the apparatus main body, and stores paper scraps or the like finely cut by the cutter part in the apparatus main body, the apparatus main body has an open / close door on the front side, An opening leading to the inside of the apparatus main body is provided at the upper end of the opening / closing door to allow the introduction of dust into the container, and the paper waste cut by the cutter between the apparatus main body and the cutter part And a means for opening and closing the opening and closing the opening door and the closing and opening of the opening and closing means for the dropping path. A shredder characterized in that it can be closed regardless of the interlocking means in a state where the open / close door is closed.   The drop path opening / closing means comprises a pair of shutter blades that can rotate between a closed position in the horizontal state and an open position in the suspended state. 2. The shredder according to claim 1, wherein tips of the shutter blades overlap each other.   The interlocking means rotates the front shutter blade in a gear device, the cam device rotates the gear device, and biases the cam device so that the front shutter blade is closed in the horizontal state. The gear device comprises a driven gear that rotates integrally with the rotating shaft of the shutter blade, and a drive gear that is pivotally supported so as to mesh with the driven gear. The cam device comprises a cam plate supported coaxially with the drive gear of the gear device, and a member for rotating the cam plate provided inwardly on the container or the opening / closing door. Or 2 shredders.   4. The shredder according to claim 3, wherein the driven gear of the gear device has teeth corresponding to an angle between a closed position in a horizontal state and an open position in a suspended state of the shutter blade.   A member for introducing a cut object such as paper into the cutter includes an introduction portion having a tapered introduction port whose lower side is narrower than the upper side, and a concave receiving portion located above the introduction portion. The shredder according to any one of claims 1 to 4, wherein the receiving portion has a shape that extends in the entire circumferential direction from the upper side opening of the introduction port on the top surface of the cutter portion.

Images