JPH051314Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a particularly small and compact cutting device for cutting documents that are no longer needed or confidential documents into small pieces for disposal.

[Conventional technology]

Conventionally, as shown in Figs. 3 and 4, this type of cutting device a is a large one installed on the office floor, with the upper part being a cutting space B and the lower part being a cutting waste storage space C. It had a box-like structure. In the cutting space b of this cutting device a, there is a pair of rotating shafts f and g, each of which is supported by a metal frame d on both sides and has a plurality of rotating teeth e.
is provided, and the rotating shafts f and g are rotated by driving a motor h provided therein. The rotation of the motor h is transmitted to this rotating shaft via a plurality of reduction gears j attached to a plurality of support shafts i, and the rotational force of the motor h is reduced. is transmitted to one rotating shaft f and the other rotating shaft g equipped with a gear meshing with the gear of this rotating shaft f,
Both rotary shafts f and g rotate in opposite directions, and the rotary teeth e and e are in sliding contact between the rotary shafts f and g, so that paper or the like can be bitten and cut at this sliding contact portion. . Then, the rotating shaft, motor, and other electrical components are covered with a cover l having an insertion opening k corresponding to the sliding contact portion of the rotating teeth, documents, etc. are inserted through the insertion opening k, and the cut scraps are removed. It had a configuration in which it was received in storage space c.

[Problems that the invention aims to solve] Nowadays, there has been a call for effective use of office space and rationalization of work, and as part of this, the introduction of OA equipment and the miniaturization and multifunctionality of office equipment are progressing. As a result, it has become desirable to make the above-mentioned cutting apparatus more compact so that it can be easily handled and carried.

However, there are cutting devices that have been miniaturized with the above-mentioned configuration, but in cutting devices with the conventional structure, as described above, the insertion opening of the cover allows
Since both sides of the cutting section are closed with driving parts such as a frame that supports the rotating shaft and interlocking gears, a cutting device that is miniaturized with this structure will have a very limited width of what can be inserted. It will be small and limited.

For this reason, there is an inconvenience that drawing paper or the like that exceeds the width of the insertion slot must be folded in half, and for wider paper, the number of folds must be increased or the paper surface must be torn before insertion to make it wide enough for insertion. Furthermore, in order to accommodate the insertion of multiple folded documents, it is necessary to increase the power of the device or increase the size of the device itself. There are inconveniences and uneconomical aspects, such as not being able to achieve the initial purpose such as increasing the external size, and not being able to use it freely at the individual level when and where needed.

Therefore, it has been a challenge to develop a compact cutting device that can be carried freely and without limiting the width of the documents that can be inserted.

[Means to solve the problem]

The present invention was made in consideration of the above-mentioned conventional problems, and a plurality of rotating teeth are provided on each of a pair of parallel rotating shafts, and the rotating shafts rotate in opposite directions to each other, and the rotating shafts are opposed to each other. A cutting part on which the rotating teeth slide and one end of each of the rotating shafts of the cutting part are extended in the same direction, and a plurality of bearings are arranged at intervals in the longitudinal direction of this extended shaft, so that each of the rotating shafts can be connected to the extended shaft. is supported by the bearings spaced apart from each other, and a plurality of gears are rotatably attached to the extension shaft between the bearings, and a drive is transmitted from the extension shaft side to each of the rotating shafts. a drive unit that drives the parts to rotate in opposite directions; and an insertion opening in the cutting unit and a discharge opening that is the back of the insertion opening, each of which has sides facing the drive unit opened to the outside; An opening section is provided that is open to the outside between the drive section and the opposing end of each of the rotating shafts, and is connected from the open side section of the insertion port to the side section of the discharge port opened. The purpose of the present invention is to provide a cutting device characterized by the following, thereby solving the conventional problems.

[Effect]

In the present invention, the extension shafts of the rotating shafts of the cutting section are supported by a plurality of spaced apart bearings to suppress shaft wobbling, and the space in which the extension shafts are arranged is configured as the arrangement space for the reduction gear. .

In other words, in order to not limit the width of the documents to be inserted and to eliminate the need for folding or tearing before cutting, providing an open section on one side of the cutting section and making each rotating shaft cantilever will prevent shaft wobbling of the rotating shaft. However, as a means to prevent this, the extension shafts are spaced apart without making the rotating shaft thicker or surrounding the entire cutting part with a strong frame or other reinforcing member. Supported by multiple bearings to reduce size and weight.

In addition, in order to downsize the device, a small motor is used, and in that case, it is necessary to generate torque at a high rotation speed.If the reduction ratio is increased, a large number of reduction gears are required, but these reduction gears are connected to the extension shaft. The extended shaft is rotatably mounted between the bearings and used as a support shaft for the reduction gear, thereby suppressing the expansion of the space inside the device due to the space for arranging a large number of reduction gears.

〔Example〕

Next, the present invention will be explained in detail based on the embodiment shown in FIGS. 1 and 2.

In the figure, reference numeral 1 denotes a cutting device, and as shown in FIG. 6. The cutting section 4 consists of a pair of rotating shafts 8 and 9, each having a plurality of circular rotating teeth 7.
9 each have extended shaft portions 10 and 11 extending from the same end in the longitudinal direction. The other ends of the rotating shafts 8 and 9 are supported by bearings 13 provided on the side walls 12 of the lower case 3 and upper case 2 (the bearings of the upper case are not shown, but are placed at positions opposite to the bearings of the lower case). The rotating teeth 7, 7 are arranged parallel to each other, and the rotating teeth 7, 7 facing each other are provided in sliding contact between the rotating shafts 8, 9.

The drive unit 5 is arranged adjacent to the cutting unit 4,
In this drive unit 5, the case inner wall 14 and the side wall 1
The extension shafts 10, 11 are attached to the side wall 15 opposite to the extension shaft 10, 11.
Bearings 16 and 17 are provided to receive the bearing (the upper case bearing is not shown, but it is located at a position facing the lower case bearing), and the bearings 13 and 16 spaced apart in the longitudinal direction of the rotating shaft and the inside of the drive unit are provided. The rotary shaft and the extension shaft are rotatably supported by bearings 16 and 17 spaced apart in the longitudinal direction of the extension shafts 10 and 11 located at .

The drive section 5 includes a motor 18 and a speed reducer 19 that transmits the rotational force of the motor 18 to the cutting section. The speed reducer 19 is provided so that the rotation of the motor 18 is transmitted to the cutting section in a decelerated state using a plurality of meshing reduction gears from a pinion provided on the drive shaft of the motor 18. 2
As shown in the figure, a first reduction gear 19a meshing with the pinion is supported by a support shaft 20 and rotates,
Thereafter, rotational force is alternately transmitted to the reduction gears rotatably attached to the extension shafts 10 and 11, and within the drive unit 5, there is a space for the extension shafts and a space for the arrangement of the plurality of reduction gears. It also serves as That is, rotation of the second reduction gear 19b attached to the extension shaft 10, rotation of the third reduction gear 19c attached to the extension shaft 11, rotation of the fourth reduction gear 19d attached to the extension shaft 10, The fixed gear 2 is fixed to the extension shaft 11 and rotates sequentially.
1 rotates the rotating shaft 9, and the rotating shaft 8 equipped with the fixed gear 22 meshing with the fixed gear 21 starts to rotate, so that the rotating shafts 8 and 9 rotate in opposite directions to each other. The rotating teeth 7 are provided so as to rotate in opposite directions to bite and cut a piece of paper inserted from above.

A slit-shaped insertion port 23 and a slit-shaped ejection port 24 are provided in the upper case 2 and the case 3 corresponding to the rotary tooth sliding portion of the cutting section 4, and a piece of paper inserted from the insertion port 23 side is inserted into the upper case 2. It is provided so that it is cut through the cutting section 4 and the cut waste is sent out from the discharge port 24. Further, the insertion port 23 and the discharge port 24 extend to the side wall 12 side (bearing side) as shown in FIG.
An opening 25 whose opposite side is open to the outside is provided continuously to the insertion port 23 and the discharge port 24.

The power supply storage section 6 is configured to store a battery 26 in a space divided into a rectangular shape, and is arranged parallel to the cutting section 4. A standing wall forming the power supply storage section 6 is provided integrally with the upper case and the lower case to strengthen the surroundings of the bearings 13 and 16. In the figure, 27 indicates the lid of the power supply storage section, and 28 indicates a spacer that prevents cutting waste from getting caught between the rotating teeth.

The sliding condition of the rotary teeth in the above-mentioned cutting section is determined by arranging the rotary teeth at equal pitches on the rotary shaft and sliding the pair of rotary teeth against each other. Although the method is the same, it is not limited to this, and may be reversed, and furthermore, various sliding patterns can be adopted as appropriate. Further, although the overall shape of the device is box-shaped, a handle portion may be provided in the case so that the entire device can be supported by hand. In addition to batteries, a household power source may be used as the power source, and a structure that allows manual switching may be provided.

When using a cutting device with the above structure, you only need to insert a piece of paper from the insertion slot. If the piece of paper has a width greater than the opening width of the insertion slot, insert the piece of paper from the insertion slot to the output port. Just repeat the operation.

[Effect of idea]

As explained above, according to the present invention, the cutting device is provided with a plurality of rotating teeth on each of a pair of parallel rotating shafts, the rotating shafts rotate in opposite directions,
a cutting part where opposing rotating teeth slide between the rotating shafts;
One end of each of the cutting portion and the rotating shaft extends in the same direction, and includes a plurality of bearings spaced apart from each other in the longitudinal direction of the extended shaft, and each rotating shaft is supported by the bearings spaced apart from each other on the extended shaft. and transmits drive from the extended shaft side through a drive transmission means comprising a plurality of gears rotatably attached to the extended shaft between the bearings, so that the respective rotating shafts rotate in opposite directions. The drive unit to be driven, the insertion opening in the cutting unit, and the discharge port which is the back of the insertion opening, respectively, have sides facing the drive unit open to the outside, and face the drive units of the respective rotating shafts. The device is characterized in that the space between the end portions is opened to the outside, and an open portion is provided that is connected to the open side portion of the insertion port and the side portion of the discharge port that is opened.

As a result, there is no need to limit the width of the document to be cut, and there is no need to use high power to cut multiple folded pieces of paper. In addition, the other piece of paper can be cut simply by holding the side of the paper and inserting it from above the cutting section, and this operation is easy, so even if the number of rotating teeth is reduced, repeated cutting operations are easy. This makes it possible to downsize the cutting device. Therefore, it is now possible to provide a cutting device with a reduced cutting width, which can be stored in a familiar place, such as a desk or a bag, and can be carried and used anywhere.

Furthermore, since each rotating shaft has an extension shaft, this extension shaft can be used as a support shaft for a plurality of reduction gears for transmitting drive to the rotating shaft. Furthermore, since each extension shaft is supported by multiple bearings spaced apart in the longitudinal direction, it is possible to increase the diameter of the rotating shaft, which tends to increase the weight of the device, and to strengthen the cutting section using a metal frame, etc. This method has excellent practical effects, such as being able to prevent shaft wobbling of the rotating shaft without having to take such measures.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing an embodiment of the cutting device according to the present invention in an exploded state, Fig. 2 is an explanatory diagram showing the internal structure of the embodiment, and Fig. 3 is an explanatory diagram showing a conventional example. FIG. 4 is an explanatory diagram showing the main parts of the conventional example. DESCRIPTION OF SYMBOLS 1... Cutting device, 4... Cutting part, 5... Drive part, 7... Rotating tooth, 8, 9... Rotating shaft, 10, 1
1... Extension shaft, 13, 16, 17... Bearing, 1
9a, 19b, 19c, 19d...reduction gear, 2
3...Insertion port, 24...Ejection port, 25...Opening part.

Claims (1)

[Claims for Utility Model Registration] A cutting portion in which a plurality of rotating teeth are provided on each of a pair of parallel rotating shafts, the rotating shafts rotate in opposite directions, and the opposing rotating teeth slide in contact between the rotating shafts; One end of each of the rotating shafts of the cutting section is extended in the same direction, and a plurality of bearings are arranged at intervals in the longitudinal direction of the extension shafts, and each of the rotation shafts is supported by the bearings arranged at intervals on the extension shafts. , and a drive transmission means comprising a plurality of gears rotatably attached to the extension shaft between the bearings, transmitting drive from the extension shaft side to drive each rotating shaft to rotate in opposite directions. an insertion port in the cutting section and an ejection port which is the back of the insertion port, the sides facing the drive section are open to the outside, and the ends of the rotating shafts facing the drive section are respectively open to the outside. 1. A cutting device comprising: an open section that is open to the outside between the sections and is connected from the open side section of the insertion port to the side section of the discharge port that is opened.