JPH10156204A - Shredder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shredder of which finely shredding blades are prevented from working even if thin articles such as necktis, neckerchiefs, etc. enter an inlet. SOLUTION: This shredder is provided with a pair of rotating finely shredding blades 4 installed between an inlet 2 and a discharging outlet 3 for paper to be shredded and a guiding route 6 communicating with the inlet 2 and led to the finely shredding blades 4 to guide paper to be shredded to the finely shredding blades 4. Finely shredded matter detecting parts 17 are installed at two positions or more at prescribed intervals in the side wall of the guiding route 6 and only in the case these finely shredded matter detecting parts 17 simultaneously work, the rotating type finely shredding blades 4 are driven.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shredder and, more particularly, to an improvement in a shredded sheet detecting section.

[0002]

2. Description of the Related Art The structure of a conventional shredder will be described with reference to FIG. That is, an inlet 2 is provided in the upper part of the main body 1 and an outlet 3 is provided in the lower part, and a pair of rotary shredding blades 4 are arranged between the inlet 2 and the outlet 3. The input port 2 and the shredding blade 4 are connected by a guide path 6 for guiding the shredded paper 5 from the input port 2 to the shredding blade 4, and the input port 2 and the guide path 6 It was composed of a smooth flat surface or curved surface so that it could be easily inserted. Further, a shredded object detection unit 7 was provided at one location on the side wall of the guideway 6.

The operation of the above configuration will be described. The shredded paper 5 inserted from the insertion opening 2 passes through the guide path 6 and is detected by the shredded object detection unit 7, shredded by the rotary shredder blade 4 and discharged. It is discharged from outlet 3.

[0004]

As described above, in the conventional configuration, there is no restriction on the input material in the input port 2 and the guide path 6, so that anything that can enter the input port 2 is shredded. I was For example, when the tip of a tie or neckerchief enters the slot 2 when the shredded paper 5 is bent to shred, the shredded object detection unit 7 detects the entered object and the rotary shredder blade 4. Could work.

[0005] Therefore, an object of the present invention is to prevent shredding even if a tie, necker chief or the like accidentally enters the inlet.

[0006]

In order to achieve the above object, the present invention provides a guide path for guiding a shredded paper to a shredding blade through an input port to the shredding blade. On the side wall of the road, at a predetermined interval, two or more shredded object detectors are provided, and the rotary shredder blade is driven only when the shredded object detectors are simultaneously operated. According to A4
When the standard paper such as plate, B5 plate, etc. is inserted, the shredder detection units provided at two or more locations operate at the same time.
Even if a narrow object such as a tie or neckerchief is erroneously inserted, the shredding operation is not performed because the shredded object detection unit does not operate at the same time.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION
A pair of rotary shredding blades provided between the shredded paper inlet and the outlet, and a guide path for guiding the shredded paper to the shredder blade from the inlet to the shredding blade. Provided at two or more places at a predetermined interval on the side wall of the guide path, and only when the shredder detecting section operates simultaneously, the rotary shredding blade is driven. According to this configuration, when the standard size paper such as A4 size or B5 size is loaded, the shredder detecting units provided at two or more locations operate at the same time, so that the shredding operation is performed. Even if a narrow object such as a small object is mistakenly inserted, the shredder detection unit does not operate at the same time, so that the shredding operation is not performed.

According to a second aspect of the present invention, a shredded object detecting section is provided at each of both ends of the guide path, and the width of the guide path is made substantially the same as the width of the standard paper. According to the regulation of the width of the guideway by the width of the standard paper,
When the fixed size paper is inclined, the shredded object detection unit does not operate at the same time, so that a paper jam due to the inclined insertion can be prevented.

In the invention according to claim 3 of the present invention, the shredder detecting portions provided on the side wall of the guide path are located at two places at a predetermined interval, and the distance between the shredder detecting portions and the shredder are determined. According to this configuration, the total length of the distance from the detection unit to the guideway end is set to be shorter than the standard paper width.
For example, the width between both ends of the guideway is adjusted to the A4 standard paper width,
Make the distance between the shredded object detection units sufficiently wider than the width of the tie or neckerchief, and add the distance between the shredded object detection units and the distance from the shredded object detection unit to the guideway edge from the B5 standard paper width. If it is set to be small, the width of the paper that can be detected for shredding can be set for both the A4 size and the B5 size, and even if a narrow width such as a tie or neckerchief is mistakenly inserted, Shredding operation can be prevented.

According to a fourth aspect of the present invention, the shredded object detecting portion is provided at two places close to the center of the guide path, one of the shredded object detecting portions is of an ultrasonic detection type, and the other is. Is a light detection method for both reflection type and direct light type, and drives the shredder blade only when only the ultrasonic detection type is detected or when it is detected by all the shredder detection units. According to this configuration, the tie When the necker chief is inserted, the reflective shredder detection unit does not operate due to the difference in the reflectance of light with paper, so that the shredding blade does not operate. On the other hand, when a transparent material such as OHP paper is shredded, light detection may or may not be possible depending on the thickness. Therefore, even when only the ultrasonic detection type is detected, the operation of the shredding blade is set by the OHP. Can be operated.

[0011] According to a fifth aspect of the present invention, the shredded object detecting section is provided so that the detecting positions of the two shredded object detecting sections provided close to the center of the guide path are the same. The direction is set, and according to the above configuration, the accuracy of detection can be improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. That is, inside the main body 8 of the shredder, a pair of rotary shredding blades 10 are arranged so as to intersect with each other in order to shred the paper to be shredded. Electric motor 12
Rotates forward and backward. Further, in the upper part of the main body 8, there is provided a slot 13 for feeding paper to be shredded into the main body 8, and a guide path 14 for guiding the fed paper to be shredded to the shredding blade 10. On the other hand, below the shredding blade 10, there is provided a discharge port which communicates with the outside of the main body 8 as described in the related art. The main body 8 is a dust box 1
6 is set.

The shredder 1 is provided on the side wall of the guideway 14.
7, the shredded object detection unit 17 detects the paper to be shredded and drives the electric motor 12. And
With the above configuration, the paper to be shredded from the insertion opening 12 passes through the guide path 14, is detected by the shredding detecting unit 17, is finely shredded by the shredding blade 9, and enters the dust box 16 from the discharge opening. So that it is discharged.

Next, the configuration of the shred detector 17 will be described in detail. The shredder according to the first embodiment of the present invention will be described. The shredder detecting section 17 is provided at two or more places on the side wall of the guide path 13 so as to have a distance sufficiently larger than the width of a tie or a neckerchief. The above-described chopped object detecting section 17 operates, that is, drives the chopping blade 10 only when a chopped object is detected.

The features of the above configuration will be described.
At the time of feeding standard size paper such as A4 size or B5 size, a plurality of shredded object detection units 17 operate simultaneously to drive the shredding blade 10 to shred it, but the width is narrow like a tie or a neckerchief. Even if an object is inserted by mistake, a plurality of pieces
Does not operate at the same time, so does not shred.

Next, a second embodiment of the present invention will be described with reference to FIG. That is, the shredded object detection units 17 provided on the side wall of the guide path 13 are located at two positions at both ends of the guide path 13, and the lengths of both ends of the guide path 13 are adjusted to the standard paper width L.

The feature of the above configuration is that when the paper other than the standard paper width L is loaded, it is restricted so as not to operate, and similarly to the first embodiment, a narrow tie or neckerchief is loaded by mistake. This also prevents the shredding operation. In addition, the width of the guide path 13 is adjusted to the standard paper width L, and the shredded object detection units 1
7, if the fixed form paper 9 is slanted as shown by a broken line, at least one of the shredded object detection units provided at both ends does not detect the paper to be thrown in, and two shredders are detected. Since the unit 17 does not operate at the same time, it is possible to prevent paper jam due to slanting.

Next, a third embodiment of the present invention will be described with reference to FIG. That is, the shredded object detection units 17 provided on the side wall of the guide path 13 are located at two places at a fixed interval,
The sum of the distance L1 between the shredded object detection units 17 and the distance A from the shredded object detection unit 17 to the end of the guide path 13 is set so as to be shorter than the standard paper width.

The operation of the above configuration will be described. For example, the distance between both ends of the guide path 13 is set to the A4 standard paper width L, and the distance L1 between the shredder detecting sections 17 is set sufficiently larger than the width of the tie or neckerchief. If the total length of the distance L1 between the shredded object detection units 17 and the distance A from the shredded object detection unit 17 to the end of the guide path 13 is set to be smaller than the paper width, the position of the shredded object can be reduced. The width of the detectable paper can be widened from B5 size to A4 size, and the shredding operation can be prevented even if a narrow width such as a tie or necker chief is erroneously inserted.

Next, a fourth embodiment of the present invention will be described with reference to FIG. That is, the shredded object detection unit 17 provided on the side wall of the guide path 13 is located at two places close to the center of the guide path 13, and one of the shredded object detection units is an ultrasonic shredded object detection unit 17a. And the other is a light detection method for both the reflective shredder detecting unit 17b and the direct shredder detecting unit 17c, and when only the ultrasonic shredder detecting unit 17a is detected or all shredder detecting units 17a The cutting blade 10 is driven only when it is detected in steps 17-17c.

According to the above configuration, when a tie or neckerchief is inserted, the ties different from the light reflectance of paper do not operate the reflective shredder detection unit 17b.
The shredding blade 10 does not operate. On the other hand, when a transparent object such as an OHP sheet is shredded, light detection may or may not be possible depending on the thickness. Therefore, the operation of the shredding blade 10 is set even when only the ultrasonic shredder detection unit 17a detects the light. By doing so, the shredding blade 10 can be operated even with a transparent material such as OHP.

Next, a fifth embodiment of the present invention will be described with reference to FIG. That is, the detection locations X of the two chopped object detectors 17a to 17c provided close to the center of the guide path 13
Are set to be the same point, so that the detection accuracy can be improved.

[0023]

As described above, according to the first aspect of the present invention, two or more shredder detectors are provided at a fixed interval on the side wall of the guideway. By driving the shredding blade only when the
When the standard size paper such as the B5 plate is inserted, the paper is shredded. However, even if a narrow tie or neckerchief is erroneously inserted, the shredding operation can be prevented.

According to the second aspect of the present invention, the length of both ends of the guide path is adjusted to the width of the standard paper so that the guide path is not operated at the time of feeding a material other than the standard paper width.
Even if a narrow thing such as a tie or neckerchief is accidentally inserted, the shredding operation is not performed. In addition, by regulating the width of the guide path and providing shredded object detection units at both ends of the guide path, it is possible to prevent the standard paper from being inclined and to prevent paper jams.

According to a third aspect of the present invention, the total length of the distance between the two shredded object detection units and the distance from the shredder detection unit to the end of the guide path is set to be small. By doing so, the width of the paper that can be shredded can be expanded,
In addition, even if a narrow tie or neckerchief is accidentally inserted, the shredding operation can be prevented.

According to the invention of claim 4 of the present invention, the shredder detecting portions provided on the side walls of the guideway are located at two places close to the center of the guideway, and one shredder detecting portion is superposed. When the sound detection method is used, and the other shredded object detection unit is a light detection system for both reflection and direct irradiation, when only the ultrasonic detection type shredded object detection unit is detected or when all shredded object detection units detect When a tie or necker chief is inserted by driving only the shredding blade, the reflective light detection type shredder detection unit does not operate due to the difference in the reflectance between paper and light. Will not work. On the other hand, a transparent object such as OHP paper can be detected by the chopping object detection unit of the ultrasonic detection type, and the shredding blade can be operated.

According to a fifth aspect of the present invention, the shredded object detection unit is provided so that the detection positions of the two shredded object detection units provided close to the center of the guide path are at the same point. By setting the direction, the detection accuracy can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a shredder showing one embodiment of the present invention.

FIG. 2 is a perspective view of a shredder showing a second embodiment of the present invention.

FIG. 3 is a perspective view of a shredder showing a third embodiment of the present invention.

FIG. 4 is a plan view of a shredder showing a fourth embodiment of the present invention.

FIG. 5 is a plan view of a shredder showing a fifth embodiment of the present invention.

FIG. 6 is a schematic explanatory view of a conventional shredder.

[Explanation of symbols]

 8 Body 10 Shredder blade 11 Slot 13 Guideway 17 Shredder detector 17a Ultrasonic shredder detector 17b Reflection shredder detector 17c Direct shredder detector

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mitsuyasu Ogawa 1006 Kazuma Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (5)

[Claims] 1. A shredding blade provided between an input port and a discharge port of shredded paper, and a guide for guiding the shredded paper to the shredding blade through the input port to the shredding blade. A path is provided, and at a fixed interval on the side wall of the guide path, shredded object detection units are provided at two or more locations, and the shredder blades are driven only when the shredded object detection units operate simultaneously. Shredder. 2. The shredder according to claim 1, wherein a shredder detecting section is provided at each of both ends of the guide path, and the width of the guide path is substantially the same as the width of the standard paper. 3. The total length of the distance between the two shredded object detection units and the distance from the shredded object detection unit to the end of the guide path is set to be shorter than the standard paper width. Also, the shredder described in 2. 4. A shredded object detection unit is provided at two places close to the center of the guide path, one of the shredded object detection units is of an ultrasonic detection type, and the other is a reflection type or direct type light. The shredder according to claim 1 or 3, wherein the shredding blade is driven only when only the ultrasonic detection method is detected or when all of the shredded object detection units detect the ultrasonic wave. 5. The shredder according to claim 4, wherein the direction of the shredder detection section is set so that the detection locations of the shredder detection sections provided at two locations are at the same point.