JP2008136988A - Shredder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shredder capable of preventing a reduction of life-span. <P>SOLUTION: The shredder comprises a rotary cutter 14 for shredding an object 100 to be shreded, an opening 13 having an oblong plan view and formed over the cutter 14, a side plane 31 disposed in the opening 13 and forming an introducing slot 13' for introducing the object 100 to be shreded with an inner wall face 131 extending in the longitudinal direction of the opening 13, a rotary member 3 rotatable around the axis parallel to the longitudinal direction of the opening 13, and a stop switch 2 which stops the rotary cutter 14 when the rotary member 3 rotates by a predetermined angle, wherein the rotary member 3 has an inclined plane 32 on the top of the side plane 31 which is inclined so as to guide the object 100 to be shreded to the underneath of the introducing slot 13'. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a shredder.

In a shredder for shredding paper and other shredded objects, if a number of shredders exceeding the shredding capacity is inserted, a rotating cutter or the like cannot shred the shredded material, causing a paper jam. May occur. At this time, if the shredding by the shredding means is continued without stopping, there is a risk that the drive part such as the rotary cutter or the motor driving the rotary cutter will continue to be overloaded, and as a result, the drive part may break down. is there. Therefore, for example, the shredder described in Patent Document 1 is configured as follows to prevent the overload state of the rotary cutter and its drive unit from continuing. That is, when the shredder is loaded with a number of objects to be shredded that exceeds the shredding capability and the drive unit of the rotary cutter is overloaded, the overload is detected by the detector. If an overload is detected by the detector, the object to be shredded in the rotating cutter is ejected by reversing the rotating cutter for a certain period of time. With this configuration, it is possible to prevent an overload state from continuing on the rotary cutter and the drive unit.
Utility Model Registration No. 2511914

  However, in the above shredder, it is necessary to chop at least a part of the shredded object once with the rotating cutter in order to determine whether the shredded object exceeds the shredding capability of the rotating cutter. is there. For this reason, when the thrown object to be shredded exceeds the capacity of the rotary cutter, an excessive load is applied to the rotary cutter and its drive unit. By repeating this, the life of the rotary cutter and its drive unit is reduced, and consequently the life of the shredder itself is reduced.

  Then, this invention makes it a subject to provide the shredder which can prevent the fall of a lifetime.

  A first shredder according to the present invention is made to solve the above-described problems, and includes a shredding means for shredding an object to be shredded, and a substantially rectangular shape in plan view formed above the shredding means. A side surface forming an input port through which an object to be shredded is inserted, and a longitudinal direction of the opening. And a stop switch that stops the shredding means when the rotating member rotates by a predetermined angle, and the rotating member is provided at an upper portion of the side surface. An inclined surface that is inclined so as to guide the object to be shredded below the inlet is formed.

  By configuring in this way, the following effects can be obtained. That is, when a number of objects to be shredded exceeding the shredding capability of the shredding means are inserted into the slot, a frictional force acts between the side surface of the rotating member and the object to be shredded depending on the thickness of the shredded object. . When the object to be shredded is further moved downward in the charging port, the rotating member rotates with the progress of the shredded object downward due to the frictional force acting between the object to be shredded. As a result, the shredding means can be stopped by the stop switch. Thus, before the shredding means shreds the number of objects to be shredded exceeding the shredding capability, the driving of the shredding means can be stopped by rotating the rotating member. For this reason, it becomes possible to prevent an excessive burden on the shredding means and its driving unit that may be generated by shredding a number of objects to be shredded that exceed the shredding ability of the shredding means. As a result, it is possible to prevent the lifetime of the shredding means and its drive unit from being reduced, and consequently to prevent the lifetime of the shredder itself from being reduced.

  Moreover, since the rotating member has the inclined surface formed on the upper part of the side surface, the following effects can be obtained. That is, if the rotating member is formed by extending the side face as it is without forming the inclined surface at the upper part of the side face and forming a corner at the upper end, the following problem may occur. In other words, when the rotating member rotates as the object to be shredded progresses downward, the corners on the side surfaces of the rotating member may come into contact with the object to be shredded, making rotation difficult. is there. On the other hand, since the rotating member of the shredder according to the present invention has an inclined surface formed on the upper part of the side surface, it is possible to reduce the corners that come into contact with the shredded object when the rotating member rotates, The rotating member can be easily rotated. Similarly, since the inclined surface is formed, it is possible to prevent the inlet from being narrowed at the corner when the rotating member rotates, so that the shredded object introduced into the inlet can be easily obtained. It can be taken out.

  Further, a second shredder according to the present invention is made to solve the above-mentioned problem, and is formed into a long and slender means for shredding an object to be shredded. A pair of rotating members arranged at a predetermined interval above, and a gap formed between them constitutes an inlet for shredded objects, and each rotary shaft is parallel to the longitudinal direction of the inlet First and second rotating members rotatable around the first rotating member; and a first stop switch that stops the shredding means when the first rotating member rotates a predetermined angle. At least one of these is formed with an inclined surface that is inclined so as to guide the object to be shredded to the lower side of the charging port at the upper part of the side surface facing the charging port.

  By comprising in this way, the effect similar to the 1st shredder mentioned above can be acquired. Further, unlike the first shredder, the second shredder forms an inlet by the opposed first and second rotating members. Therefore, when a shredded object having a thickness larger than the width of the charging port is thrown, the shredded object is sandwiched between the rotating first and second rotating members. Again, force is easily applied, and each rotating member can be rotated more easily. As a result, the shredding means can be stopped by operating the stop switch more reliably.

  The second shredder can take various configurations. For example, the second shredder may further include a second stop switch that stops the shredding means when the second rotating member rotates a predetermined angle. In this way, by providing a stop switch to correspond to each rotating member, even if the rotation of one of the rotating members is hindered for some reason, the remaining rotating members can rotate. A corresponding stop switch can stop the shredding means.

  The first and second shredders can have various configurations. For example, it is preferable that the upper end of the inclined surface is formed in an arc shape. Normally, when a shredded object such as paper is inserted, the center part of the shredded object is bent. Therefore, by forming the upper end of the inclined surface in an arc shape, the bent shredded object The shape matches the shape of the inclined surface, and it becomes easy to put the object to be cut into the inlet.

  ADVANTAGE OF THE INVENTION According to this invention, the shredder which can prevent the lifetime reduction can be provided.

(First embodiment)
Hereinafter, a first embodiment of a shredder according to the present invention will be described with reference to the accompanying drawings. 1 is a side sectional view of a shredder according to the first embodiment, FIG. 2 is a perspective view of an upper lid of the shredder according to the first embodiment, and FIG. 3 is an exploded perspective view showing a back surface of the upper lid of the shredder according to the first embodiment. FIG. 4 is a side sectional view of the upper lid of the shredder according to the first embodiment.

  As shown in FIG. 1, the shredder 1 includes an elliptical columnar casing 11 having an open upper surface, and an upper lid 12 provided so as to close the upper surface of the casing 11. As shown in FIGS. 1 and 2, the upper lid 12 has a substantially oval shape in plan view and is formed in a shape and size that matches the upper surface of the casing 11. In addition, an opening 13 having a substantially rectangular shape in plan view is formed at the center thereof so as to extend along the major axis direction of the elliptical shape. A rotating member 3 to be described later is installed in the opening 13, and the stop switch 2 is disposed adjacent to the rotating member 3. In the upper lid 12, a pair of rotary cutters (slicing means) 14 for chopping the object to be shredded 100 and a drive motor 16 that is a drive unit for driving the rotary cutter 14 to rotate are installed. . The rotary cutter 14 is disposed below the opening 13, and its rotation axis extends along the longitudinal direction of the opening 13 (from the front side to the back side in FIG. 1). In the casing 11, a waste box 15 for collecting shredded waste 200 of the shredded object 100 shredded by the rotary cutter 14 is installed, and the shredded waste 200 of the shredded object 100 is recovered. Are arranged to be. The waste box 15 is a hollow elliptical cylinder having an open upper surface, and is sized to be accommodated in the casing 11. Moreover, the waste box 15 is detachably attached in the casing 11 so that the waste box 15 can be taken out from the casing 11 when the inside is filled with shredded waste 200.

  Next, the structure of the rotating member 3 and its periphery will be described.

  As shown in FIGS. 2, 3, and 4, the rotating member 3 is installed in the opening 13, and is formed on a substantially rectangular side surface 31 that extends in the longitudinal direction of the opening 13 and an upper portion of the side surface 31. An inclined surface 32 and an upper surface 33 extending in parallel with the upper surface of the upper lid 12 are provided. Two end surfaces 34 connected to the end portions of the side surface 31, the inclined surface 32, and the upper surface 33 are formed, and a through hole 341 is formed in each end surface 34. The side surface 31 has a substantially rectangular plate shape whose length in the longitudinal direction is substantially the same as the length in the longitudinal direction of the opening 13, and the shredded object 100 is inserted between the side surface 31 and the inner wall surface 131 of the opening 13. Is formed. A pressing projection 35 extends from the side surface 31 to the side opposite to the side facing the inner wall surface 131 of the opening 13. The width D of the inlet 13 ′, which is the distance between the inner wall surface 131 and the side surface 31 of the opening 13, is configured to be substantially the same as the maximum thickness of the object 100 that can be shredded by the rotary cutter 14. Yes. An inclined surface 32 is formed on the upper portion of the side surface 31 thus configured. The inclined surface 32 is inclined so as to guide the shredded object 100 below the charging port 13 ′, and its upper end is formed in an arc shape. And the upper surface 33 is extended from the circular-arc-shaped upper end of the inclined surface 32 so that the upper surface and the upper surface of the upper cover 12 may become flat. The protrusion 41 of the shaft member 4 fixed to the back surface of the upper lid 12 extends through the through hole 341 of the end surface 34 of the rotating member 3 configured as described above. Thereby, the rotating member 3 is installed so as to be rotatable around the through hole 341.

  As shown in FIGS. 3 and 4, the stop switch 2 is disposed adjacent to the rotary member 3, and is electrically connected to the drive motor 16 so as to stop the rotary cutter 14 by transmitting a signal to the drive motor 16. Connected. More specifically, the stop switch 2 includes a pressing element 21 protruding toward the rotating member 3, and the pressing element 21 is disposed at a position where the pressing switch 21 faces the pressing protrusion 35 of the rotating member 3 and is not pressed. As shown in the figure, it is fixed to the back surface of the upper lid 12 in the vicinity of the periphery of the opening 13. The stop switch 2 is configured to transmit a signal for stopping the rotary cutter 14 to the drive motor 16 when the pressing element 21 is pressed.

  Next, the operation of the shredder 1 configured as described above will be described with reference to the drawings. FIG. 5 is an explanatory view for explaining the operation of the shredder according to the first embodiment. More specifically, FIG. 5 is a side sectional view showing a state in which the rotating member 3 is rotated clockwise from the state of FIG.

  First, an object to be shredded 100 such as paper that is no longer needed is inserted from the insertion port 13 ′. When the number of the shredded objects 100 introduced is within the shredding ability of the rotary cutter 14, that is, when the thickness d of the shredded object 100 is smaller than the width D of the inlet 13 ', the inlet 13 As shown in FIG. 1, the shredded object 100 introduced from “is shredded by the rotary cutter 14 into shredded waste 200 and is collected in the waste box 15.

  On the other hand, as shown in FIG. 5, when the number of shredded objects 100 exceeds the shredding capability of the rotary cutter 14, that is, the thickness d of the shredded object 100 is the width D of the inlet 13 ′. When the shredded object 100 is inserted, a frictional force acts between the shredded object 100 and the side surface 31 of the rotating member 3 depending on the thickness of the shredded object 100. When the object to be shredded 100 further travels below the inlet 13 ′, the rotating member 3 rotates clockwise with the progress of the object to be shredded 100 due to the frictional force acting between the object to be shredded 100. . When the rotating member 3 rotates in this way, the pressing protrusion 35 presses the pressing element 21 of the stop switch 2, so that a signal is transmitted from the stop switch 2 to the drive motor 16 to control the drive motor 16 and the rotary cutter 14. Stop shredding by. When the shredding by the rotary cutter 14 stops and the shredded object 100 is pulled out from the insertion port 13 ′, the rotating member 3 rotates counterclockwise so that it returns to the original state (the state of FIG. 4). The rotating member 3 is biased by known biasing means (not shown) such as a torsion spring.

  As described above, according to the first embodiment, when the number of objects 100 to be shredded exceeding the shredding capability of the rotary cutter 14 is thrown into the insertion port 13 ′, the number of the rotary cutter 14 exceeding the shredding capability is increased. Before the shredded object 100 is shredded, the rotary cutter 14 can be stopped by rotating the rotating member 3. For this reason, it is possible to prevent an excessive burden on the rotary cutter 14 and the drive motor 16 that is a drive unit thereof, which may be generated by chopping the number of objects to be cut 100 exceeding the shredding capability of the rotary cutter 14. To. As a result, it is possible to prevent the lifespan of the rotary cutter 14 and the drive motor 16 from being reduced, and as a result, it is possible to prevent the lifespan of the shredder 1 itself from being reduced.

  Further, since the rotating member 3 has the inclined surface 32 formed on the upper portion of the side surface 31 forming the charging port 13 ′, the following effects can be obtained. That is, if the inclined surface 32 is not formed in the upper part of the side surface 31 of the rotating member 3, as shown in FIG. 6, the rotating member 3 rotates as the shredded object 100 moves downward to the inlet 13 ′. When this occurs, the upper part of the side surface 31 of the rotating member 3 (the corner indicated by the two-dot chain line in FIG. 6) abuts on the shredded object 100, making it difficult for the rotating member 3 to rotate. There is a possibility that the pressing element 21 cannot be pressed. On the other hand, since the rotating member 3 of the shredder 1 according to the first embodiment has the inclined surface 32 formed on the upper portion of the side surface 31, the portion that contacts the shredded object 100 when the rotating member 3 rotates. Therefore, the rotary member 3 can be easily rotated, and the rotary cutter 14 can be stopped by reliably pressing the pressing element 21 of the stop switch 2. Moreover, if the inclined surface 32 is not formed, even if the rotating member 3 can be rotated and the rotating cutter 14 can be stopped, the upper portion of the side surface 31 (the corner indicated by the two-dot chain line in FIG. 6) By biting into the shredded object 100, it becomes difficult to take out the shredded object 100 from the inlet 13 '. On the other hand, when the inclined surface 32 is formed at the upper part of the side surface 31, the portion that is inserted into the input port 13 ′ and is not shredded can be reduced. The shredded object 100 can be easily taken out from the inlet 13 ′.

(Second Embodiment)
Next, a second embodiment of the shredder according to the present invention will be described with reference to FIGS. FIG. 7 is a perspective view of the upper lid 12 of the shredder 1 ′ according to the second embodiment, and FIG. 8 is a schematic side sectional view of the upper lid of the shredder 1 ′ according to the second embodiment.

  The second embodiment is greatly different from the first embodiment described above in that the shredder 1 ′ includes two rotating members 3a and 3b, and other configurations are the same as those in the first embodiment. Therefore, in the following, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIGS. 7 and 8, the shredder 1 ′ is installed in the opening 13 of the upper lid 12 so that the first rotating member 3 a and the second rotating member 3 b are opposed to each other with a predetermined interval. The first rotating member 3a is formed in a long shape, and is formed on a substantially rectangular side surface 31a extending in the longitudinal direction of the opening 13 (from the near side to the far side in FIG. 8) and on the upper side of the side surface 31a. And an upper surface 33a extending parallel to the upper surface of the upper lid 12. Two end surfaces 34a connected to the respective end portions of the side surface 31a, the inclined surface 32a, and the upper surface 33a are formed, and a through hole 341a is formed in each end surface 34a. Similar to the first embodiment, the protrusion 41a of the shaft member 4a is inserted into the through hole 341a, and the rotating member 3a is installed to be rotatable around the through hole 341a. Similarly, the second rotating member 3b also includes a side surface 31b, an inclined surface 32b, an upper surface 33b, and an end surface 34b, and the protruding portion 41b of the shaft member 4b is inserted into a through hole 341b formed in the end surface 34b. , And is installed rotatably around the through hole 341b. An insertion port 13 ′ for introducing the shredded object 100 is formed between the side surface 31 a of the first rotating member 3 a and the side surface 31 b of the second rotating member 3 b facing the first rotating member 3 a. Further, the first and second rotating members 3a and 3b are formed with pressing protrusions 35a and 35b extending on the opposite side to the insertion port 13 ', respectively.

  A first stop switch 2a is arranged on the left side of the first rotating member 3a so as to be adjacent thereto. The first stop switch 2a has a pressing element 21a protruding toward the first rotating member 3a, and the pressing element 21a is in contact with the pressing protrusion 35a of the first rotating member 3a so as not to be pressed. Moreover, the 2nd stop switch 2b is arrange | positioned on the right side of the 2nd rotation member 3b so that it may adjoin. Similar to the first stop switch 2a, the second stop switch 2b has a pressing element 21b that protrudes toward the second rotating member 3b, and the pressing element 21b is not pressed against the pressing protrusion 35b of the second rotating member 3b. Touching the degree.

  The operation of the shredder 1 'configured as described above will be described with reference to FIG. FIG. 9 is an explanatory diagram showing the operation of the shredder 1 ′ according to the second embodiment. First, the shredded object 100 is introduced into the insertion port 13 '. When the thickness d of the shredded object 100 is substantially the same as or larger than the width D of the insertion port 13 ′, the shredded object 100 and the first rotating member 3 a are changed depending on the thickness of the shredded object 100. A frictional force acts between the side surface 31a and the side surface 31b of the second rotating member 3b. When the shredded object 100 further advances downward, the first rotating member 3a rotates clockwise and the second rotating member 3b rotates counterclockwise by the frictional force. Thus, when the first rotating member 3a rotates, the pressing protrusion 35a presses the pressing element 21a of the stop switch 2a, and when the second rotating member 3b rotates, the pressing protrusion 35b stops. The pressing element 21b of the switch 2b is pressed. Then, signals are transmitted from the stop switches 2a and 2b to control the drive motor 16, and the shredding by the rotary cutter 14 is stopped.

  As described above, according to the second embodiment, the same effects as in the first embodiment can be obtained, and the following effects can be obtained. That is, in the shredder 1 ′ according to the second embodiment, the input port 13 ′ is formed by the first rotating member 3 a and the second rotating member 3 b facing each other. Accordingly, when the shredded object 100 having a thickness d larger than the width D of the charging port 13 ′ is thrown, the shredded object 100 is sandwiched between the first and second rotating members 3a and 3b that both rotate. Therefore, the force is easily applied to any of the rotating members 3a and 3b, and the rotating members 3a and 3b are more easily rotated. As a result, the pressing protrusions 35a and 35b of the rotating members 3a and 3b press the pressing elements 21a and 21b of the stop switches 2a and 2b to operate the first and second stop switches 2a and 2b more reliably. The cutter 14 can be stopped.

  In the second embodiment, the two stop switches 2a and 2b are installed in correspondence with the rotary members 3a and 3b. However, the second stop switch 2b corresponding to the second rotary member 3b can be omitted. . Moreover, although the rotating member 3a arrange | positioned at the left side of FIG. 8 was demonstrated as a 1st rotating member of this invention, even if the rotating member 3b arrange | positioned at the right side corresponds to the 1st rotating member of this invention. In this case, the stop switch 2a arranged on the left side can be omitted.

  As mentioned above, although each embodiment of this invention was described, this invention is not limited to these, A various change is possible unless it deviates from the meaning of this invention. For example, in the above embodiment, the rotary cutter 14 is stopped by pressing the pressing element 21 of the stop switch 2, but the stop switch 2 includes a detector that detects the distance from the rotating member 3. It can also be configured such that a signal for stopping the rotary cutter 14 can be transmitted to the drive motor 16 depending on the distance from the rotary member 3. Alternatively, the stop switch 2 has a detector that detects the rotation angle of the rotating member 3, detects that the rotating member 3 has rotated a predetermined angle, and transmits a signal for stopping the rotating cutter 14 to the drive motor 16. It can also be configured to be able to.

  Moreover, in the said embodiment, although the rotary cutter 14 is used as a shredding means, it is not specifically limited to this, What is necessary is just to be able to shred the to-be- shredded object 100. FIG.

It is side surface sectional drawing which shows 1st Embodiment of the shredder which concerns on this invention. It is a perspective view of the upper cover of the shredder which concerns on 1st Embodiment. It is a disassembled perspective view which shows the back surface of the upper cover of the shredder which concerns on 1st Embodiment. It is side surface sectional drawing of the upper cover of the shredder which concerns on 1st Embodiment. It is explanatory drawing explaining operation | movement of the shredder which concerns on 1st Embodiment. It is explanatory drawing explaining the outline of operation | movement of the shredder which concerns on 1st Embodiment. It is a perspective view of the upper cover of the shredder which concerns on 2nd Embodiment. It is a schematic side sectional view of the upper lid of the shredder according to the second embodiment. It is explanatory drawing explaining operation | movement of the shredder which concerns on 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shredder 100 Shredded object 13 Opening 13 'Input port 131 Inner wall surface 14 Rotation cutter (shredding means)
2 Stop switch 3 Rotating member 31 Side surface 32 Inclined surface

Claims (4)

Shredding means for shredding the shredded object,
A substantially rectangular opening in plan view formed above the shredding means;
Between the inner wall surface that is installed in the opening and extends in the longitudinal direction of the opening, has a side surface that forms an insertion port through which an object to be shredded is inserted, and an axis parallel to the longitudinal direction of the opening is provided. A rotating member rotatable around the center;
A stop switch that stops the shredding means when the rotating member rotates a predetermined angle;
The rotating member is a shredder having an inclined surface formed so as to guide an object to be shredded below the charging port at an upper portion of the side surface. Shredding means for shredding the shredded object,
A pair of rotating members formed in a long shape and arranged at a predetermined interval above the shredding means, and the gap formed between them constitutes an inlet for shredded objects, First and second rotating members rotatable around respective rotation axes parallel to the longitudinal direction of the inlet,
A first stop switch that stops the shredding means when the first rotating member rotates a predetermined angle;
At least one of the first and second rotating members is a shredder in which an inclined surface that is inclined so as to guide an object to be shredded below the input port is formed on an upper portion of a side surface facing the input port.   The shredder according to claim 2, further comprising a second stop switch that stops the shredding means when the second rotating member rotates a predetermined angle.   The shredder according to any one of claims 1 to 3, wherein the inclined surface has an upper end formed in an arc shape.

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