JP2008062189A - Shredder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shredder having such high safety that a finger or the like can be prevented effectively from being inserted into a feeding port of the object to be shredded. <P>SOLUTION: The shredder 1 for shredding a shredding object 2 fed through the feeding port 3, by a rotary cutter 12 and discharging the shredded object to a refuse housing box is constituted so that a passage from the feeding port to the rotary cutter is formed by a fixed wall 10 and a movable wall 20 arranged to be opposed to the fixed wall while keeping a predetermined space from the fixed wall and the movable wall is turned so that the trailing end of the passage is narrowed when the leading end of the passage is widened. When an object thicker than the expected shredding object is inserted into the feeding port, the leading end of the passage is widened by the turn of the movable wall and consequently the passage is blocked. As a result, even when the finger or the like is inserted into the feeding port by mistake, there is little risk of being injured. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a shredder for finely cutting an object to be cut such as paper or a compact disk, and more particularly to a shredder that can prevent an injury caused by putting a finger or the like into an input port of the object to be cut.

For example, Patent Document 1 discloses a technique for preventing the occurrence of injury due to an accidental insertion of a finger into a shredder insertion slot.
The technique disclosed in Patent Document 1 is provided with a proximity sensor that detects the presence of a person or an animal in the vicinity of an input port in order to detect an undesirable object such as a human finger entering the input port of the shredder. That's it.
JP-A-2005-95898

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 rotary 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.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a shredder that has a simple structure but can prevent an injury caused by putting a finger or the like into a slot.

  In order to solve the above-described problems, the present invention provides a shredder that cuts an object to be cut inserted from an insertion port with a rotary blade and discharges it to a waste storage box, with a fixed wall and a predetermined interval from the fixed wall. A path from the charging port to the rotary blade is formed by a movable wall arranged opposite to the movable wall, and the movable wall is configured to be rotatable so that it narrows at the end when the path is widened at the start. It is characterized by that.

  In this case, the insertion port is formed by opening a predetermined portion of the housing, the fixed wall is continuously formed from the insertion port toward the inside of the housing, and the movable wall is pivoted to a mounting portion provided inside the housing. The outer shell of the shredder may be configured by supporting it, and the passage may be shielded by a protruding portion that protrudes from the pivotal support portion of the movable wall.

Further, the input port may be provided on the upper surface of the housing, and the length from the edge of the upper surface of the housing to the end of the passage of the fixed wall may be set corresponding to the standard paper size.
Moreover, you may form continuously the outer wall part which comprises the outline of a shredder so that it may become substantially flush with the housing on the said movable wall.
Moreover, you may provide the space part which escapes the front-end | tip part of a to-be-cut object when a channel | path is shielded by rotation of the said movable wall in the terminal part vicinity of the said channel | path.

According to the first aspect of the present invention, a passage from the charging port to the rotary blade is formed by the fixed wall and the movable wall arranged to face the fixed wall at a predetermined interval. When it is widened at the end portion, it is configured to be rotatable so that it is narrowed at the end portion. The start end is widened, and the end of the passage is narrowed accordingly.
This prevents the insert from reaching the rotary blade, so that an operator may accidentally insert a hand into the slot, or an infant may mischiefly insert a hand into the slot. Even if it exists, the approach to a rotary blade can be inhibited. For this reason, the risk of injury from the rotating blade can be reduced.

According to a second aspect of the present invention, a slot is formed by opening a predetermined portion of the housing, a fixed wall is continuously formed from the slot to the inside of the housing, and a movable wall is provided at a mounting portion provided inside the housing. Since the outer shell of the shredder is constructed by pivoting, the passage from the inlet to the rotary blade can be easily formed.
In addition, an overhang is provided at the pivot of the movable wall so that when the movable wall is rotated, the passage is shielded by the overhang, so the thickness is unexpected even though it is simple. When there is something that enters the passage, the passage to the rotary blade can be reliably blocked.

  In the invention according to claim 3, the length from the edge of the upper surface of the housing to the end of the passage of the fixed wall is set to a standard paper size such as A4 size, B5 size, postcard size, etc. An object to be cut placed on the upper surface of the housing can be prevented from sliding off from the upper surface of the housing to the opposite side. In this case, the standard paper size corresponds to the shredder application for home use, copy paper cutting, compact disc cutting, and the like.

In the invention according to claim 4, since the outer wall portion constituting the outer body that is substantially flush with the housing is formed continuously on the movable wall, the outer shell body of the shredder having a compact design can be formed.
The invention according to claim 5 is provided with a space in the vicinity of the end portion of the passage so that the tip of the object to be cut is released when the passage is shielded by the rotation of the movable wall. The insert can be guided in a safe direction. As a result, even when the insert is inserted vigorously, it is possible to avoid a situation in which it rushes to a movable wall that is constricted or shielded.

  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 perspective view of a shredder 1 according to an embodiment of the present invention as viewed from the front side, FIG. 2 is a perspective view as viewed from the back side, and FIG. 3 is a plan view.
The shredder 1 is for cutting a sheet-like object to be cut such as paper or a compact disk. The object to be cut inserted from the insertion port 3 is cut by a rotary blade provided inside the housing 5 to produce waste. It is designed to be discharged into a storage box.

First, the configuration of the housing 5 of the shredder 1 will be described. The housing 5 is made of a synthetic resin casing having a vertically long rectangular parallelepiped shape, and a door 7 is rotatably attached to the front surface. When the door 7 is opened, a waste collection box (not shown) is accommodated so as to be drawn forward.
As shown in FIG. 4, the upper surface 51 of the housing 5 is opened from the rear surface 52 side to the center portion, and the opening 3 for the object to be cut is formed by the opening portion. In addition, the housing upper surface 51 is formed with an introduction surface 9 that smoothly inclines toward the back side (see FIG. 5), and a continuous wall 10 that is curved in a funnel shape is formed on the introduction surface 9. ing.

The fixed wall 10 forms a passage for guiding the workpiece to be cut introduced from the introduction surface 9 together with the movable wall 20 to be described later to the rotary blade 12, and has a lower end to form a clearance space S in the passage. The vicinity of the part is slightly recessed toward the front side (see FIG. 6).
As shown in FIG. 5, if the length N from the edge 56 of the housing upper surface 51 to the terminal end of the fixed wall 10 is set to a standard paper size such as A4 size, B5 size, postcard size, It is possible to prevent the object 2 to be cut placed on the housing upper surface 51 from slipping down from the housing upper surface 51 to the opposite side in an attempt to enter the insertion port 3.

As shown in FIG. 4, a frame 53 is provided from both sides of the insertion port 3 toward the inside of the housing, and a movable wall shown in FIG. 8 is attached to a mounting portion 54 (see FIG. 7) installed on the frame 53. 20 is attached so that rotation is possible (refer FIG. 6).
The movable wall 20 forms a passage to the rotary blade 12 of the object to be cut together with the fixed wall 10, and the fixed wall 10 is provided with an interval M of about 2 mm to 10 mm at the narrowest end portion. Are arranged opposite to each other.

  The movable wall 20 extends upward while being slightly curved toward the front side, and is bent toward the back side at the upper end. When the movable wall 20 is assembled to the housing 5 via the mounting portion 54, the bent portion 21 (outer wall portion) is flush with the upper surface 51 of the housing 5 and constitutes the outer body of the shredder 1. (See FIG. 5).

  The movable wall 20 is rotatably attached to the attachment portion 54 of the frame 53 by a pivot shaft 22 provided at a predetermined length L above the lower end portion (see FIGS. 8 and 6). That is, when the movable wall 20 rotates about the pivot shaft 22 in the direction in which the starting end portion of the passage is widened, the passage projects from the pivot shaft 22 toward the lower end portion (the projection portion 23). Is supposed to be shielded. In this case, the overhang length “L” of the overhang portion 23 is appropriately designed in consideration of the distance between the fixed wall 10 and the movable wall 20.

  A pair of rotary blades 12 for performing a cutting action is disposed below the fixed wall 10 and the movable wall 20 configured as described above, as shown in FIG. The rotary blade 12 is provided with a number of sharp cutting blades on the peripheral surface of the cylindrical body, and the two cylindrical bodies are arranged in parallel horizontally so that the cutting blades face each other. It is supported so that it can rotate.

A sensor (not shown) is attached above the rotary blade 12 (for example, the fixed wall 10). When the sensor detects the passage of the workpiece 2, a drive motor (not shown) is operated, and the rotary blade is operated. 12 is configured to rotate.
A drive motor for rotating the rotary blade 12 is connected to a power supply circuit that is closed by turning on a power switch (not shown) provided in the housing 5.

A series of devices for driving the rotary blade 12 includes a protective wall that appears when the door 7 of the housing 5 is opened, and the rotary blade 12 and the dust when the door 7 of the housing 5 is opened and the waste collection box is pulled out. It is desirable to prevent the cutting operator from touching directly with a shutter that shields the collection box.

The usage method of the shredder 1 of the said structure is demonstrated with reference to FIG.
When performing the cutting operation, the object to be cut 2 is put into the insertion port 3 as shown in FIG. At this time, if it is introduced so as to be slid from the introduction surface 9 toward the fixed wall 10 curved in a funnel shape, it can be smoothly introduced even from a distant position.
The object to be cut 2 put in this way passes through the passage formed by the fixed wall 10 and the movable wall 20 and reaches the rotary blade 12. During this passage, the passage of the workpiece 2 is detected by the sensor, and the rotary blade 12 is driven. Then, as the workpiece 2 passes between the rotating blades 12 in the rotating state, the workpiece 2 is finely cut while being wound around the rotary blade 12.

During such a cutting operation, as shown in FIG. 5B, if the finger is accidentally slid into the insertion port 3, the upper end of the movable wall 20 rotates in the direction of widening the passage, Along with this, the projecting portion 23 at the lower end of the movable wall 20 rotates in the direction of narrowing the passage, and the passage is narrowed.
Further, when the finger is inserted deeply into the passage, the passage is shielded by the overhanging portion 23, and the finger that has lost its place enters the escape space S as shown in FIG. Stops in contact with the wall.

Accordingly, even if an infant makes a mischief such as inserting a finger deeply into the insertion port 3 of the shredder 1, the finger does not contact the rotary blade 12, so the insertion port of the shredder 1 3 can be prevented from being injured.
If the distance M between the fixed wall 10 and the movable wall 20 is designed to be a width corresponding to the cutting ability of the rotary blade 12, the movable wall 20 can be cut when a workpiece to be cut exceeds the number of pieces that can be cut. Is rotated in the direction in which the passage is widened, the end portion of the passage is narrowed by the protruding portion 23 at the lower end, and the supply amount to the rotary blade 12 can be limited.

As a result, the object to be cut can be fed to the rotary blade 12 by an appropriate amount, so that it is possible to prevent a situation in which the object to be cut is bitten by the rotary blade 12 and the rotary blade 12 stops. Further, it is possible to prevent the rotary blade 12 from being damaged by the object to be cut being bitten by the rotary blade 12.

In the present embodiment, the fixed wall 10 is continuously formed by the same member from the insertion port 3 toward the inside of the housing 5, but the fixed wall may be formed by a member different from the housing 5.
Further, the movable wall may have any structure as long as the movable wall rotates so as to be narrowed at the terminal end when the passage is widened at the starting end.

In addition, the movable wall 20 of the present embodiment is continuously formed with the outer wall portion 21 that is substantially flush with the housing 5 and forms the outer body. However, the outer wall portion 21 may not be provided. In this case, it is desirable that the upper surface 51 of the housing 5 reaches the upper end of the movable wall 20.
Further, it is not always necessary to provide the escape space S in the vicinity of the end portion of the passage. In this case, when the passage is blocked by the rotation of the movable wall 20, the tip of the object to be cut comes into contact with the overhanging portion 23 of the movable wall 20 and stops.

Further, the length N from the edge portion 56 of the upper surface 51 of the housing 5 to the terminal portion of the fixed wall 10 does not necessarily correspond to the paper size.
Further, the passage of the object to be cut is not necessarily formed in a curved shape.
Further, the insertion port of the shredder 1 may be configured to be inserted from directly above the housing 5 or may be provided on the side surface of the housing 5 or the like.

  The present invention can be used for commercial and household shredders.

It is the perspective view which looked at the shredder which concerns on embodiment of this invention from the front side. It is the perspective view which looked at the said shredder from the back side. It is a top view of the said shredder. It is explanatory drawing which looked at the upper surface and back surface of the housing from the inside of the said shredder. It is explanatory drawing which shows the use condition of the said shredder. It is a perspective view which shows the channel | path comprised by the fixed wall and movable wall of the said shredder. It is a perspective view which shows the said fixed wall and an attaching part. It is a perspective view which shows the said movable wall.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Shredder 2 ... Paper to be cut 3 ... Slot 5 ... Housing 7 ... Door 9 ... Introduction surface 10 ... Fixed wall 12 ... Rotary blade 20 ... Movable wall 21 ... bent part (outer wall part)
22 ... Pivot shaft (Pivot)
23 ... Overhang portion 51 ... Upper surface 52 ... Back surface 53 ... Frame 54 ... Mounting portion 56 ... End edge S ... Escape space (space portion)

Claims (5)

In the shredder (1) for cutting the object to be cut inserted from the inlet (3) with the rotary blade (12) and discharging it to the waste storage box,
A passage from the insertion port (3) to the rotary blade (12) is formed by the fixed wall (10) and the movable wall (20) opposed to the fixed wall (10) at a predetermined interval. And
A shredder characterized in that the movable wall (20) is configured to be turnable so that the passage is narrowed at the end when the passage is widened at the start.   The insertion port (3) is formed by opening a predetermined portion of the housing (5), and the fixed wall (10) is continuously formed from the insertion port (3) toward the inside of the housing, and is provided inside the housing. An outer shell body of the shredder (1) is configured by pivotally supporting the movable wall (20) on the mounting portion (54), and an overhanging portion projecting from the pivotal portion (22) of the movable wall (20) ( The shredder according to claim 1, wherein the shredder is configured to be shielded by 23).   The insertion port (3) is provided on the upper surface (51) of the housing (5), and the length from the edge (56) of the housing upper surface (51) to the end of the passage of the fixed wall (10) is standardized. The shredder according to claim 1, wherein the shredder is set to correspond to the paper size.   The outer wall (21) constituting the outer body of the shredder (1) is formed continuously with the movable wall (20) so as to be substantially flush with the housing (5). The shredder according to claim 1. The space part which escapes the front-end | tip part of a to-be-cut object when a channel | path is shielded by rotation of the said movable wall (20) is provided in the terminal part vicinity of the said channel | path. The shredder according to claim 1.

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