JP2008068196A - Structure of throw-in slit of cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the structure of a throw-in slit of a cutting device, the structure being simple and capable of preventing a person from being injured by the insertion of his finger or the like into a throw-in slit. <P>SOLUTION: A passage, which is narrower than the thickness of a child's finger, is provided in the direction from a throw-in slit 3 to a cutting blade 5, and an elastic member 10, which is deformable in the passage width enlarging direction, is arranged at the start end part of the passage, and a switch 30 which is operated by the elastic deformation of the elastic member is provided, and the operation of the switch is capable of stopping the operation of the cutting blade. Even if a finger or the like is inserted into an insertion hole and reaches the cutting blade 5, the cutting blade 5 is at a standstill, and accordingly, there is less possibility to cause a serious accident such as cutting of a finger. <P>COPYRIGHT: (C)2008,JPO&INPIT

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 in which a proximity sensor for detecting the presence of a person or an animal is provided in the vicinity of the insertion port in order to detect an undesirable object such as a human finger entering the insertion port of the shredder. It is disclosed.
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 2005-95898 A 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. Is low.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a slot structure of a cutting device that can prevent an injury caused by putting a finger or the like into a slot of a sheet material 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 can be deformed in the direction of widening the passage is provided at the start end of the passage, a switch that is operated by elastic deformation of the elastic member is provided, and the cutting blade cannot be driven by the operation of the switch It is characterized by having become.

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 disposed at the start end of the passage, and cutting is performed by the elastic deformation. The blade drive switch is operated, and the cutting blade cannot be driven. Therefore, the rotation of the cutting blade can be stopped when a finger or the like is inserted into the insertion port and the elastic member is elastically deformed.
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 illustrating a slot structure 1 of a cutting apparatus according to an 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 the object to be cut inserted from the insertion port 3 is cut by a cutting blade 5 provided inside the housing 4. 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, in the passage member 20, a rail member having a cross-sectional shape in which a semicircular upper circular arc portion is cut out is connected to an opening formed by cutting out the upper surface of the housing 4 to a predetermined width. It is formed. In this rail member, the central portion forming the passage is referred to as a passage wall portion 21, the bottom portion is referred to as a bottom wall portion 22, and the portion descending from the housing 4 is referred to as a rear wall portion 23 (see FIG. 1). .

An elastic member 10 having a circular arc cross section is attached so as to cover the rail member having the above 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 portion of the elastic member 10 facing the passage and the rear wall portion 23 of the passage member 20, and in the initial state, the width M of the passage is equal to that of the infant's finger. When it is narrower than the thickness and elastically deformed, the gap generated between the distal end portion 11 of the elastic member 10 and the passage member 20 is adjusted to be 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, a flank 13 is provided at the distal end portion 11 of the elastic member 10 so as to be inclined in a direction that warps from the passage.

Such a set of the elastic member 10 and the passage member 20 is disposed so as to face each other with a predetermined interval M, so that a passage of the object to be cut from the insertion port 3 toward the cutting blade 5 is formed. 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.
A limit switch 30 for controlling the driving of the cutting blade 5 is disposed on the back side of the passage member 20.

The limit switch 30 is attached to the back surface of the rear wall portion 23 of the passage member 20 so that the operation portion is exposed from a small hole 31 provided in the rear wall portion 23 of the passage member 20.
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.

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. It bends greatly in the direction of widening.

At this time, a gap is formed between the elastic member 10 and the passage member 20, and a finger is guided into the gap and enters the space S. Then, it abuts against 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.

  Even if the finger has reached the cutting blade 5, the tip 11 of the elastic member 10 is pressing the operating portion of the limit switch 30, so that the rotary blade 5 is already in an inoperable state. . For this reason, even if the cutting operation is being performed, the rotation of the cutting blade 5 is immediately stopped, so that a situation where a finger is caught in the rotating cutting blade 5 can be avoided.

  In addition, if the space | interval M of a passage is designed to the width according to the cutting capability of the cutting blade 5, when the to-be-cut object 9 is thrown in exceeding the number of sheets which can be cut, the drive of the rotary blade 5 is stopped. You can also. As a result, it is possible to prevent a situation in which the workpiece 9 is bitten by the cutting blade 5 and the cutting blade 5 stops. 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 the present embodiment, the passage member is disposed on the downstream side of the elastic member. However, as shown in FIG. 6, only the elastic member 10 ′ that presses the limit switch 30 may be provided.
In this case, the finger cannot escape from the course, but even if the finger reaches the cutting blade 5, the cutting blade 5 is already stopped, so that a major accident such as finger cutting occurs. The possibility of connection is low.

The switch pressed by the elastic member 10 may have any structure as long as the drive circuit of the cutting blade 5 can be opened and closed.
Further, the elastic member 10 may be made of rubber or sponge as long as the passage can be widened, or a rigid body pivotally supported by the housing 4 is biased toward the passage by a spring. It may be.

  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 embodiment of this invention. It is a perspective view which shows the shredder 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.

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 (1)

An inlet structure (1) of a cutting device (2) for cutting a sheet material put into a housing,
A passage 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 that can be deformed in the direction of widening the passage is disposed at the start end of the passage. An input port of a cutting device, characterized in that a switch (30) operated by elastic deformation of the member (10) is provided, and the cutting blade (5) is made inoperable by the operation of the switch (30). Construction.

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