JP4925425B2 - Cutting device slot structure - Google Patents

Description

  The present invention relates to a structure of a slot of a cutting device such as a shredder for finely cutting a sheet material such as paper or a compact disk, or a card cutting machine for cutting cards such as a business card into a predetermined size, In particular, the present invention relates to a slot structure that can prevent an injury caused by a finger or the like entering the slot.

In a cutting device such as a shredder or a card cutting machine, the following patent document discloses a technique for preventing a finger from being accidentally inserted into a sheet material inlet or a tie or the like being caught in the inlet. There is something that was done.
Patent Document 1 discloses a technique of providing a proximity sensor for detecting the presence of a person or an animal in the vicinity of an insertion port in order to detect an undesirable object such as a human finger entering the insertion port of a shredder. Has been.
Patent Document 2 discloses a technique in which a paper guide having a recessed portion at the top is installed around a paper slot of a cutting machine in order to prevent a tie or the like from being caught in a cutter.
JP-A-2005-95898 JP 05-115807 A

However, the technique disclosed in Patent Document 1 requires a proximity sensor that can distinguish and detect an undesirable object such as a person or an animal and an object to be cut, and depending on the position of the sensor, There is a risk that it will also react to the operator's hand when inserting the object to be cut, which may hinder the cutting work.

In particular, in a shredder configured to automatically rotate the cutting blade at the same time as the object to be cut is inserted, a separate sensor is required to detect the insertion of the object to be cut. In addition to being complicated, it is difficult to adjust the mounting position. For this reason, since manufacturing cost increases and a product price becomes high, it is difficult to spread as a shredder for home use.

The technique disclosed in Patent Document 2 may reduce the situation where the tie is unintentionally cut, but it is effective when a finger or the like is consciously inserted into the paper insertion slot due to a child's mischief or the like. There is no.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a slot structure of a cutting apparatus that can prevent an injury caused by putting a finger or the like into the slot while having a simple structure.

  In order to solve the above-mentioned problem, the present invention is a slot structure of a cutting device for cutting a sheet material placed in a housing, and has a passage narrower than the thickness of an infant's finger from the slot to the cutting blade. An elastic member that is deformable in the direction of widening the passage is disposed in the path direction at the start end of the passage, and is substantially flush with the elastic member on the downstream side of the elastic member. A passage member constituting the wall surface is arranged so that when the elastic member is elastically deformed, a gap wider than the thickness of the infant's finger is formed between the distal end portion of the elastic member and the passage member. It is characterized by this.

In this case, the gap generated when the elastic member is elastically deformed may be continuous with the space portion restricted by the passage member.
Moreover, you may provide the flank which inclines in the direction which warps from a channel | path at the front-end | tip part of the said elastic member.
Moreover, you may arrange | position the set of the said elastic member and the said channel member facing the start end part of the said channel at predetermined intervals.

  Furthermore, a switch that is operated by elastic deformation of the elastic member may be provided, and the cutting blade may not be driven by the operation of the switch.

In the invention according to claim 1, since the passage narrower than the thickness of the infant's finger is provided from the insertion port toward the cutting blade, a thing thicker than the thickness of the infant's finger unintentionally enters the insertion port. Can be prevented.
Even if a finger or the like is inserted into the insertion port due to mischief or carelessness, an elastic member that can be deformed in the direction of widening the passage is arranged in the course direction at the start end of the passage, Since the finger enters the gap generated when the elastic member is elastically deformed, the path of the finger toward the cutting blade can be deflected.

At this time, since the passage member that is substantially flush with the elastic member and forms the wall surface of the passage is disposed on the downstream side of the elastic member, the path of the finger inserted into the gap at the tip of the elastic member is It is possible not to return to the direction of the cutting blade.
In the invention according to claim 2, since the gap generated when the elastic member is elastically deformed continues to the space portion regulated by the passage member, the finger or the like inserted into the gap at the tip of the elastic member It strikes the member and stops in its space. Accordingly, it is possible to more effectively prevent the finger inserted into the insertion port from moving toward the cutting blade.

In the invention according to claim 3, since the flank inclined in the direction of warping from the passage is provided at the tip of the elastic member, the finger that has entered the passage can be smoothly guided to the gap at the tip of the elastic member.
In the invention according to claim 4, since the set of the elastic member and the passage member is opposed to each other at a predetermined interval at the start end portion of the passage, when a finger or the like is inserted from any direction toward the opening portion But it can effectively divert your finger path.

The invention according to claim 5 is provided with a switch operated by elastic deformation of the elastic member so that the cutting blade cannot be driven by the switch operation, so that the elastic member is elastic by inserting a finger or the like into the insertion slot. When it is deformed, the rotation of the cutting blade can be stopped.
Thus, even if the finger reaches the cutting blade, it does not come into contact with the rotating cutting blade, and a major accident such as cutting of the finger can be avoided.

  A preferred embodiment of the present invention will be described with reference to the accompanying drawings. In addition, embodiment is not limited to the following forms, The other aspect is also possible if the subject of this invention can be solved.

FIG. 1 is a cross-sectional view showing a slot structure 1 of a cutting apparatus according to a first embodiment of the present invention. The inlet structure 1 of this cutting apparatus is applied to the inlet 3 of the shredder 2 shown in FIG.
First, the structure of the shredder 2 to which the slot structure 1 of the cutting apparatus according to the present invention is applied will be described.

The shredder 2 is for cutting a sheet-like object to be cut such as paper or a compact disc. And it discharges to the waste storage box provided below the cutting blade 5.
A door 8 is rotatably attached to the front surface of the housing 4 of the shredder 2. When the door 8 is opened, a waste collection box (not shown) is accommodated so as to be drawn forward.

On the upper surface of the housing 4, a charging port 3 for loading a sheet material is provided.
A pair of cutting blades 5 for cutting the sheet material is disposed below the insertion port 3. The cutting blade 5 is provided with a number of sharp cutting blades 5 on the peripheral surface of the cylindrical body, and the two cylindrical bodies are arranged in parallel horizontally so that the cutting blades 5 face each other. It is rotatably supported at the part.

A sensor (not shown) is attached above the cutting blade 5, and when the sensor detects the passage of the object to be cut, a drive motor (not shown) is activated, and the cylindrical cutting blade 5 is rotated. The object to be cut that passes between the cutting blades 5 is finely cut.
The drive motor for rotating the cutting blade 5 is connected to a power supply circuit that is closed by turning on a power switch 6 provided in the housing 4. A series of devices for driving the cutting blade 5 includes a protective wall that appears when the door 8 of the housing 4 is opened, and a cutting blade 5 that is opened when the door 8 of the housing 4 is opened and the waste collection box is pulled out. The shutter that shields between the trash and the waste collection box prevents the cutting operator from touching directly.

Next, the slot structure 1 applied to the shredder 2 will be described in detail.
A passage for the object to be cut is formed from the inlet 3 of the shredder 2 toward the cutting blade 5. This passage is constituted by an elastic member 10 disposed in the course direction of the object to be cut and a passage member 20 formed integrally with the housing 4.

  In this case, the upper surface of the housing 4 of the shredder 2 is lowered to the position of the cutting blade 5 before the insertion port 3, bent toward the passage side on the cutting blade 5, and drawn upward while drawing a gentle curve. It is molded into a shape that goes to That is, as shown in FIG. 3, the passage member 20 is a rail-shaped member having a cross-sectional shape in which the semicircular upper circular arc portion is cut out in an opening formed by cutting out the upper surface of the housing 4 to a predetermined width. Are formed continuously. In this rail-shaped passage member 20, a central portion forming the passage is referred to as a passage wall portion 21, a bottom portion is referred to as a bottom wall portion 22, and a portion descending from the housing 4 is referred to as a rear wall portion 23. (See FIG. 1).

The elastic member 10 having a circular arc cross section is attached so as to cover the passage member 20 having the above-described configuration.
The elastic member 10 is disposed at the start end portion of the passage (that is, upstream of the passage) so that the passage wall surface is configured to be substantially flush with the passage wall portion 21 of the passage member 20. The elastic member 10 is configured by a plate spring-like member made of metal or synthetic resin, and is designed so that a gap is generated between the distal end portion 11 of the elastic member 10 and the passage member 20 when elastically deformed. Has been.

  In this case, the spring 12 is disposed between the rear wall portion 23 of the passage member 20 and the elastic member 10, and in the initial state, the width M of the passage is smaller than the thickness of the infant's finger, and the spring 12 is elastic. When deformed, the gap generated between the distal end portion 11 of the elastic member 10 and the passage member 20 is adjusted to have a width (about 15 mm to 20 mm) wider than the thickness of the infant's finger. In addition, the thickness of an infant's finger shall mean the length N shown in FIG.

The gap generated when the elastic member 10 is elastically deformed is continuous with the rail-shaped space S regulated by the passage member 20.
In addition, the tip 11 of the elastic member 10 is provided with a flank 13 that is inclined in a direction deviating from the passage. When an insert such as a finger presses the elastic member, the elastic member 10 smoothly enters the space S. It has come to be guided.

  Two sets of such elastic members 10 and passage members 20 are arranged to face each other with a predetermined interval M, so that a passage for the object to be cut from the insertion port 3 toward the cutting blade 5 is formed. It becomes. An interval M at which the set of the elastic member 10 and the passage member 20 is opposed to each other is set smaller than the thickness of the infant's finger, for example, about 2 mm to 10 mm.

The usage state of the shredder 2 having the above configuration will be described with reference to FIG.
When performing the cutting operation, the workpiece 9 is inserted into the insertion port 3. At this time, since the width of the passage from the insertion port 3 toward the cutting blade 5 is narrower than the thickness of the infant's finger, even if the finger is brought close to the vicinity of the insertion port 3 as shown in FIG. The risk of being inserted into 3 is low.
If a finger is accidentally inserted into the insertion slot 3, the elastic member 10 provided at the start end of the passage is deformed as shown in FIG. In this direction, a large gap is formed between the passage member 20 and the finger is guided to the gap. Then, the finger enters the space portion S from the gap, and comes into contact with the inner wall surface of the passage member 20 and stops.

Thereby, even when a finger is accidentally inserted into the insertion slot 3, the possibility of reaching the cutting blade 5 is reduced. On the other hand, the sheet-like workpiece 9 inserted into the insertion port 3 together with the finger is in a state in which the gap is closed by the finger, so that it does not enter the gap and passes through the passage to the cutting blade 5. It reaches.

  In addition, if the space | interval M of a channel | path is designed to the width | variety according to the cutting capability of the cutting blade 5, when the to-be-cut material 9 is thrown in exceeding the number of sheets which can be cut | disconnected, the elastic member 10 will widen a channel | path. Thus, an excessive number of sheets can be retracted into the space S. As a result, the workpiece 9 can be fed into the cutting blade 5 by an appropriate amount, so that it is possible to prevent the workpiece 9 from being bitten by the cutting blade 5 and stopping. . Further, it is possible to prevent the cutting blade 5 from being damaged due to the workpiece 9 being bitten by the cutting blade 5.

  In this embodiment, the elastic member 10 and the passage member 20 are disposed opposite to each other to form a passage from the inlet 3 to the cutting blade 5, but as shown in FIG. A set of the elastic member 10 and the passage member 20 may be disposed. In this case, by setting the side on which the set of the elastic member 10 and the passage member 20 is disposed on the side opposite to the side on which the object to be cut is placed (that is, the back side 4a of the shredder 4), 3 can be smoothly guided to the space S.

Further, as shown in FIG. 7, the elastic member 10 ′ may have a structure in which no flank is provided at the tip, and the space S continuous from the gap generated during elastic deformation becomes an open space. The passage member 20 ′ may be attached to the housing 4.
Further, the material of the elastic member is not limited to metal or synthetic resin, but may be rubber or sponge-like. Alternatively, the elastic member may be configured by biasing a rigid body pivotally supported by the housing 4 toward the passage side by a spring or the like.

  FIG. 8 is a cross-sectional view showing a slot structure 1 ′ of a cutting apparatus according to the second embodiment of the present invention. The cutting apparatus 1 'of this cutting device is different from the cutting opening structure of the cutting apparatus according to the first embodiment only in that a switch 30 operated by elastic deformation of the elastic member 10 is provided. Other configurations are the same.

That is, the limit switch 30 is disposed on the back side of the rear wall portion 23 of the passage member 20, and the operation portion of the limit switch 30 is exposed from the small hole 31 provided in the rear wall portion 23 of the passage member 20. Yes. When the elastic member 10 is elastically deformed, the distal end portion 11 presses the operation portion of the limit switch 30.
The limit switch 30 is connected to a drive motor for rotating the cutting blade 5, and when the operation part of the limit switch 30 is pressed, the rotary blade 5 becomes inoperable.

As a result, when a thick object is inserted into the inlet 3 of the shredder 2 and the passage is widened, the limit switch 30 is operated by the tip 11 of the elastic member 10 to stop the cutting blade 5 in the rotating state. Can be made.
For this reason, when a finger or the like is inserted into the insertion port 3, the cutting blade 5 stops immediately. Therefore, even if the finger reaches the cutting blade 5, the cutting blade in the rotated state is used. 5 is not touched. For this reason, the risk of leading to a major accident such as a finger cut is reduced.

  The present invention is applicable to an inlet of a cutting device used in all industrial fields such as home use, office use, industrial use, etc., as long as it is a device having a structure for cutting a sheet material put into a housing from an input slot. be able to.

It is sectional drawing which shows the insertion port structure of the cutting device which concerns on 1st Embodiment of this invention. It is a perspective view which shows the shredder 2 to which the slot structure of the said cutting device is applied. It is explanatory drawing which shows the elastic member and channel | path member of the insertion port structure of the said cutting device. It is explanatory drawing which shows the thickness of an infant's finger | toe. It is sectional drawing which shows the use condition of the slot structure of the said cutting device. It is sectional drawing which shows the 1st modification of the slot structure of the said cutting device. It is sectional drawing which shows the 2nd modification of the slot structure of the said cutting device. It is sectional drawing which shows the insertion port structure of the cutting device which concerns on 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cutting device slot structure 2 ... Shredder 3 ... Loading port 4 ... Housing 5 ... Cutting blade 6 ... Power switch 8 ... Door 9 ... Material to be cut DESCRIPTION OF SYMBOLS 10 ... Elastic member 11 ... Tip part 12 ... Spring 13 ... Flank 20 ... Channel member 21 ... Channel wall part 22 ... Bottom wall part 23 ... Rear wall part 30 ... Limit switch 31 ... Small hole S ... Space

Claims (5)

An inlet structure (1) of a cutting device (2) for cutting a sheet material put into a housing,
A path narrower than the thickness of the infant's finger is provided from the insertion port (3) toward the cutting blade (5), and an elastic member (10) deformable in the direction of widening the path at the start end of the path is provided in the course direction. A passage member (20) that is substantially flush with the elastic member (10) and forms a wall surface of the passage is disposed on the downstream side of the elastic member (10);
When the elastic member (10) is elastically deformed, a gap wider than the thickness of the infant's finger is formed between the distal end portion (11) of the elastic member (10) and the passage member (20). An inlet structure for a cutting apparatus characterized by the above.   The slot structure of the cutting device according to claim 1, wherein a gap generated when the elastic member (10) is elastically deformed is continuous with a space portion regulated by the passage member (20). .   The inlet of the cutting device according to claim 1 or 2, wherein a flank (13) inclined in a direction deviating from a passage is provided at a tip (11) of the elastic member (10). Construction.   The set of the said elastic member (10) and the said channel member (20) is opposingly arranged at predetermined intervals at the starting end part of the said channel | path, The any one of Claims 1-3 characterized by the above-mentioned. An inlet structure for a cutting device according to one claim. The switch (30) operated by elastic deformation of the elastic member (10) is provided, and the cutting blade (5) cannot be driven by the operation of the switch (30). The inlet structure of the cutting device according to any one of claims 4 to 4.

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