JPH053346B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a particularly small and compact cutting device for cutting unnecessary documents into small pieces.

[Conventional technology]

Conventionally, as shown in FIG. 7, this type of cutting device A has a box-shaped structure with a cutting space B in the upper part and a cutting waste storage space C in the lower part, and is installed on the office floor. type, and the cutting space B of this cutting device A
has a tooth section in which a plurality of rotating teeth provided on each of a pair of rotating shafts rotate in opposite directions while being in sliding contact with each other between the rotating shafts, and an insertion opening D corresponding to this tooth section is provided.
A cover E having a diameter is covered, and documents and the like are inserted through the insertion opening D of the cover E, and the scraps cut through the teeth are received in the cut scrap storage space.

[Problem to be solved by the invention]

However, in the above-mentioned conventional cutting device, the width of what can be inserted is limited due to the insertion opening and the fact that both ends of the rotating shaft of the teeth are closed by a drive device, rotating bearing, etc. Drawing paper that exceeded the width of the insertion slot had to be folded in half, and for wider paper, the number of folds had to be increased or the paper surface had to be torn to make it wide enough for insertion. Furthermore, considering the case where multiple folded documents are inserted, it is necessary to increase the power of the device, limit the number of sheets that can be cut at once, or increase the size of the device itself. Inconveniences such as not being able to use it freely on an individual level when and where necessary;
It was uneconomical. Therefore, it has been a challenge to develop a compact cutting device that can be carried freely without limiting the width of the documents that can be inserted.

[Means to solve the problem]

The present invention has been made in consideration of the above-mentioned conventional problems, and includes a tooth portion in which a plurality of rotating teeth provided on each of a pair of parallel rotating shafts are in rotatable sliding contact with each other between the rotating shafts; a driving section located at one end of the tooth to cantilever support each rotating shaft and drive the rotating shafts so that they rotate in opposite directions; Provided is a cutting device characterized in that an opening is provided which opens laterally and communicates with the tooth, and the other end of the tooth is opened outward through the opening. This solves the conventional problems.

〔Example〕

Next, the present invention will be explained in detail based on the embodiments shown in FIGS. 1 to 6.

In the figure, reference numeral 1 denotes a cutting device, and the cutting device 1 has a tooth portion 4 and a drive portion 5 housed between an upper case 2 and a lower case 3, as shown in FIG. The tooth portion 4 consists of a pair of connected rotating shafts 41 each having a plurality of circular rotating teeth 40, and the rotating shafts 41 are arranged in parallel so that the rotating teeth 40 can rotate relative to each other between the rotating shafts 41. It is in sliding contact with the

The drive section 5 includes a motor 50 and a motor 50.
gear box 5 that transmits the driving force of to the tooth section 4;
1, and the motor 50 and gearbox 51 are connected in such a way that a pinion 52 provided on the drive shaft of the motor 50 meshes with the gear a in the gearbox 51.

Further, each end of the rotating shaft 41 of the tooth portion 4 is pivotally supported by a gear box 51 as shown in FIG.
Each is supported on a cantilever so that it can rotate. The driving force of the motor 50 is then transmitted to the gear e located at the end of one rotating shaft 41 through gears a, b, c, and d arranged in the gear box 51 in order, thereby rotating the rotating shaft 41. The other rotating shaft 41, which has a gear f meshing with the gear e at its end, also rotates. It is designed to bite and cut inserts such as paper.

The upper case 2 and lower case 3 that cover the teeth 4 are each provided with a slit-shaped insertion opening 6 and an ejection opening 7 corresponding to the biting portion of the teeth 4, and the insertion opening 6 and the ejection opening 7 are provided in the upper case 2 and the lower case 3, respectively. Each outlet 7 has an opening 8 at one end.
It is open across the side edges of the case. The other end of each of the rotating shafts 41 facing the gearbox side is rotatably supported by a bearing 30 of the lower case 3, and the rotating shaft 41 is mounted on each of the bearings 30 provided with an opening 8 in between. Part 4
The other end, which is not connected to the drive section 5, is open to the outside in the longitudinal direction of the tooth section 4. In the lower case 3 , a battery 9 that supplies power to the motor 50 is housed in a storage section 31 and covered with a lid 32 .

In addition, the sliding contact state of the rotating teeth in the tooth section is as follows:
The rotating teeth are arranged at equal pitches around the rotating shaft, and the way in which one set of rotating teeth slides into contact with each other is the opposite of the way in which an adjacent set of rotating teeth slides into contact, but the method is limited to this. Various sliding contact patterns can be adopted as appropriate. Further, although the case is box-shaped, the case may be provided with a grip portion so that the entire body can be supported by hand. Furthermore, the driving source is not limited to batteries, but can also be powered by a household power source or manually operated.

When using a cutting device with the above structure, it is sufficient to insert a piece of paper or the like through the insertion slot 6. If the piece of paper has a width greater than the opening width of the insertion slot,
As shown in FIG. 3, the operation of inserting the side portion of the piece of paper from the insertion port 6 to the discharge port 7 may be repeated. In order to reinforce the opening 8, as shown in FIG. 4, a substantially U-shaped reinforcing arm 10 may be detachably and slidably attached so as to straddle the opening.

Furthermore, as shown in FIG. 5, by inserting only one side of a sealed letter, it can also be used as a letter opener. In this case, a slide letter guide 20 may be slidably provided near the opening side of the insertion port 6, or a concave letter guide 21 may be provided on the opening side as shown in FIG.
By placing the sealed letter against the slide letter guide or the letter guide, the positioning of the sealed letter becomes easy and the sides of the sealed letter can be opened reliably.

〔Effect of the invention〕

As explained above, according to the present invention, the cutting device includes a tooth portion in which a plurality of rotating teeth provided on each of a pair of parallel rotating shafts are rotatably in sliding contact with each other between the rotating shafts; a drive section located at one end to support each of the rotating shafts in a cantilever manner and drive the rotating shafts so that they rotate in opposite directions; Since an opening is provided which is open toward the outside and communicates with the tooth, and the other end of the tooth is opened outward through the opening, the width of the documents to be cut can be limited. This eliminates the need for higher power to deal with items that have been folded multiple times. In addition, the other piece of paper can be cut by simply holding the side of the paper and inserting it from above the teeth, and the operation is easy, so even if the number of rotating teeth is reduced, repeated cutting operations are easy. This makes it possible to achieve low output and miniaturization. By reducing the cutting width, we are now able to provide a compact and low-cost cutting device that can be stored in a familiar place, such as on a desk or in a bag, and the battery type eliminates the need for external power. You will be able to carry and use it anywhere, including overseas. It also has excellent practical effects, such as being able to cut the desired sidewall of a piece of paper and also being used as a letter opener.

[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 embodiment in cross section, Fig. 3 is an explanatory diagram showing the state of use, and Fig. 4 is an explanatory diagram showing a state in which a reinforcing arm is installed,
5 and 6 are explanatory diagrams showing other embodiments, and FIG.
The figure is an explanatory diagram showing a conventional example. 1... Cutting device, 4... Teeth section, 5... Drive section,
6... Insertion port, 7... Outlet port, 8... Opening, 4
0... Rotating tooth, 41... Rotating shaft, 50... Motor, 51... Gearbox.

Claims (1)

[Claims] 1. A tooth section in which a plurality of rotating teeth provided on each of a pair of parallel rotating shafts are in rotatable sliding contact with each other between the rotating shafts, and a tooth section located at one end of the tooth section to cantilever support each rotating shaft and rotate. and a drive unit that drives each shaft to rotate in opposite directions,
The other end of the tooth portion is provided with an opening that is open laterally in the longitudinal direction of the tooth portion and communicates with the tooth portion,
A cutting device characterized in that the other end of the tooth portion is open to the outside through the opening.