JPH022432Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a document shredding device, and more particularly to a document shredding device that can reduce noise and improve shredding performance.

[Technical background of the invention and its problems] A document shredding device for shredding documents, etc. generally has a pair of shredding cutters that slide into contact with each other in a casing that has an inlet into which documents, etc. are input. It has a structure in which two rows of cutters are arranged facing each other, and documents, etc. inserted from the input slot are inserted between these two rows of cutters, and the documents, etc. are shredded. It's summery.

In such a document shredding device, while documents are being shredded, the shredding noise from the cutter row is propagated outside the casing through the input port, which generally creates a harsh noise in the office where the document shredding device is installed. often occurs. In addition, depending on the paper quality of documents, etc., the number of sheets stacked, the stacking state, etc., there may be variations in the amount of documents etc. that the shredding cutter holds.
Documents, etc. may wrinkle, making the noise even higher, increasing the shredding load, and worsening the shredding performance.

[Purpose of the invention] The present invention was made with these points in mind, and the purpose is to provide a document shredding device that can reduce noise during shredding and improve shredding performance. shall be.

[Summary of the invention] In the present invention, two rows of cutters each having a pair of shredding cutters arranged facing each other so as to be in sliding contact with each other are arranged in a casing having an input port into which documents, etc. are input. In the document shredding device, a pair of sound insulating materials are disposed between the input port and the two cutter rows in parallel with the two cutter rows, and at least one of the pair of sound insulating materials is close to each other. It is characterized in that it is supported so as to be swingable about an eccentric shaft in the direction of rotation.

According to the present invention, during shredding, the frictional force between the document, etc. and the pair of sound insulating materials causes at least one of the pair of sound insulating materials to oscillate about the eccentric shaft in a direction in which they approach each other. move. When the pair of sound insulating materials approach each other, the noise generated from the cutter row 15 can be blocked, and the casing 1
1. Noise propagating outside can be blocked. In addition, tension is applied to the document between the pair of sound insulating materials and the cutter row to prevent the document from wrinkling.
It is possible to reduce noise generation and improve shredding performance.

[Embodiments of the invention] Hereinafter, embodiments of the invention will be described with reference to the drawings.

1 to 3 are diagrams showing an embodiment of a document shredding device according to the present invention. Reference numeral 11 in the figure
1 is a casing of a document shredding device, and the upper end surface of this casing 11 is opened with an input port 13 into which documents and the like are input. In the casing 11 below the input port 13, two cutter rows 15 are disposed, each consisting of a pair of shredding cutters 15a, 15b arranged facing each other so as to be in sliding contact with each other. Between the two cutter rows 15 and the input port 13, a pair of sound insulating materials 16a and 16b are arranged in parallel with the two cutter rows 15. The pair of sound insulating materials 16a and 16b are arranged close to each other so as to close the input port 13.

FIG. 3 is a partial perspective view showing this pair of sound insulating materials 16a, 16b. In the figure, reference numeral 16a, 1
6b is a sound insulating material having a substantially fan-shaped cross section, and is supported so as to be swingable around eccentric shafts 21a and 21b that are located closer to each other than the fan-shaped central axes 22a and 22b, respectively. Therefore, when the pair of sound insulation materials 16a and 16b respectively swing in the direction of arrow L1 in FIG. 3, the distance between the sound insulation materials 16a and 16b narrows. The pair of sound insulators 16a, 16b are constantly pulled by return springs 18a, 18b fixed to the inner wall surface of the casing 11 so that the distance between them increases in the direction of arrow L2 in FIG. Also a pair of sound insulation materials 1
6a, 16b, the casing 11
Stoppers 20a and 20b are fixed to the inner wall surface of the sound insulating members 16a and 16b to prevent the distance between the pair of sound insulating members 16a and 16b from increasing beyond a predetermined value.

In the figure, the reference numeral 17 is a motor with a gear reducer that rotationally drives the cutter row 15, and the reference numeral 19 is a waste box into which the thin layers are dropped and stored.

Next, the operation of this embodiment having such a configuration will be explained.

During document shredding, the document P input from the input port 13 passes between the pair of sound insulating materials 16a and 16b, and enters between the row of cutters 15 which are rotationally driven. , 15b, and become shredded waste, which becomes a waste plate 19.
It falls and is stored.

During this document shredding, the pair of sound insulating materials 16a, 16 are stopped at a predetermined interval by springs 18a, 18b and stoppers 20a, 20b.
When the document, etc. P is drawn into the cutter row 15 through the gap between the document, etc.
16b, a frictional force is generated between the pair of sound insulating materials 16
a and 16b swing in the direction of arrow L1 in FIG. 3 about eccentric shafts 21a and 21b, respectively. When the pair of sound insulation materials 16a and 16b swing in this way,
As the distance between them narrows, the document P being shredded moves in the direction of the cutter row 15 while being held between the pair of sound insulating materials 16a and 16b. On this occasion,
The document etc. P is in a state of tension between the pair of sound insulating materials 16a, 16b and the two cutter rows 15,
Tension is applied to the document P. This prevents the document, etc., from wrinkling, and allows the document, etc., to be cut into the cutter row 15 in a good manner. Further, since the pair of sound insulation materials 16a and 16b are located closer to each other, the input port 13 is located closer to the pair of sound insulation materials 16a and 16b.
a and 16b, and the noise generated from the cutter 15 can be prevented from propagating outside the casing 11 through the inlet 13.

When discharging the input documents, etc.,
The pair of sound insulating materials 16a and 16b are swung in the direction of arrow L2 in FIG.
It is stopped by 20b. The document, etc. P passes between the sound insulating materials 16a and 16b, which are spaced apart, and is discharged from the input port 13 without any hindrance.

As described above, according to this embodiment, the pair of sound insulating materials 16 disposed between the input port 13 and the cutter 15
a, 16b are arranged so as to be able to swing in the direction toward each other around the eccentric shafts 21a, 21b, respectively, so that the frictional force between the document, etc., P being shredded and the pair of sound insulating materials 16a, 16b is reduced. This allows the pair of sound insulating materials 16a and 16b to approach each other to block noise, reduce noise propagating outside the casing 11, and prevent shredded debris from scattering to the outside.

In addition, the pair of rollers 16a and 16b apply tension to the documents, etc. between them and the cutter row 15, preventing wrinkles from occurring in the documents, etc. during shredding, improving shredding performance, and reducing load. It is possible to prevent noise from being generated due to the increase in the amount of noise.

Note that in this embodiment, the sound insulation materials 16a, 1
Although the example in which the cross section of 6b is fan-shaped has been shown, this cross section may also be circular. In addition, a pair of sound insulation materials 16
Although an example has been shown in which both of the sound insulating material 16a and the sound insulating material 16b are swingably arranged, it is possible to make only one of them, for example, the sound insulating material 16a swingable, and the other sound insulating material b is fixedly arranged. It's okay.

Furthermore, although the springs 18a and 18b were used as a method for returning the pair of sound insulators 16a and 16b, it is also possible to attach weights to the pair of sound insulators 16a and 16b and return them using the force of gravity.

[Effects of the invention] As explained above, according to the invention, by blocking the input port using a pair of sound insulating materials, it is possible to prevent the propagation of shredding noise generated from the row of cutters during shredding, and to The noise of the shredding equipment can be reduced,
It is possible to prevent shredded waste from scattering to the outside. Further, by applying tension to the document or the like being shredded, wrinkles can be prevented, an increase in shredding load and noise can be prevented, and shredding performance can be improved.

[Brief explanation of the drawing]

1 to 3 are views showing one embodiment of the document shredding device according to the present invention, in which FIG. 1 is a sectional view thereof, FIG. 2 is a sectional view taken along the line of FIG. 1, and FIG. 3 is a pair of FIG. 2 is a partial perspective view showing a sound insulating material. 11...Casing, 13...Inlet, 15...
...Cutter row, 16a, 16b...Sound insulation material, 18
a, 18b... Spring, 20a, 20b...
Stopper, 21a, 21b...Eccentric shaft, 22a,
22b...Fan shaped center axis, P...Document, etc.

Claims (1)

[Scope of utility model registration request] In a document shredding device, in which two rows of cutters each having a pair of shredding cutters arranged in sliding contact with each other are disposed in a casing having an input port into which documents, etc. are input. and 2
A pair of sound insulating materials are placed between the two rows of cutters.
1. A document shredding device, wherein at least one of the pair of sound insulating materials is supported so as to be swingable about an eccentric shaft in a direction in which at least one of the sound insulating materials approaches each other.