JPH053227Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a paper shredding device that shreds unnecessary paper.

[Prior art]

Conventionally, spacers for cutter blades for paper shredding devices have a drive shaft that drives the cutter blade in the center, and a guide shaft for guiding and holding the spacer inserted in the top and bottom, making it impossible to rotate. A non-rotatable type has been proposed in which the cutter blade is suspended from the drive shaft of the cutter blade and the other side is brought into contact with the inner wall of the housing to guide the paper.

[Problem that the invention attempts to solve]

In this conventional method, only the normal rotation for shredding paper is considered. When a jam occurs, when removing paper jam by rotating the drive shaft and reversing the cutter, the removal of paper and scraps is not taken into account, and paper jam occurs between the paper input slot, the cutter blade, and the inner wall of the housing. This is the cause of this. Furthermore, in order to eliminate paper jams in the conventional structure, there were problems such as the need to provide sufficient space between the cutter blade and the inner wall of the housing when taking into account the reverse rotation. This invention aims to solve the above-mentioned conventional problems, and is intended to reliably shred paper and to easily and reliably eject paper in the event of a paper jam. Moreover, it is also an objective to provide an inexpensive device.

[Means to solve the problem]

The spacer is disposed between the cutter blades and has a vertically long paper guide portion facing the inside of the pair of drive shafts, with a protrusion at its lower end; when the cutter blades rotate in the forward direction, the shredded paper abuts against the paper guide portion, causing the protrusion of the spacer to rotate outward relative to the two drive shafts, and when the cutter blades rotate in the reverse direction, the protrusion of the spacer rotates inward relative to the two drive shafts due to clogged paper; and a frame that surrounds the pair of cutter blades and has a receiving portion that can abut against the protrusion to regulate the rotation of the protrusion of the spacer when the cutter blades rotate in the forward direction.

[Effect]

According to this configuration, the spacer of the paper shredding device of the present application guides the shredded paper downward during forward rotation, but during reverse rotation, it is pressed and rotated by the jammed paper, and the spacer The spacer is rotatably and loosely supported so as to open the discharge passage which is closed during normal rotation.

【Example】

In the conventional technology (Utility Model Application Publication No. 51-78489) shown in Fig. 3,
The spacer 24 is supported by the main body by a drive shaft 21 and upper and lower guide shafts 23, 23. During normal rotation, the shredded paper is guided by the guide portion 25 and descends. Since the spacer 24 is supported at three points, it can move in the direction in which the cutter blades 22 are arranged in both forward and reverse rotations, but cannot rotate relative to the drive shaft 21 or the like. In the prior art shown in FIG. 4, the spacer 34 is placed on a ring spacer 36 on the drive shaft 31. On the outside of the cutter blade 32,
In surface contact with the housing inner wall 38, the push plate 3
3 prevents it from rising. Inside, the guide part 35
has been established. During normal rotation, the paper input from the paper input port 39 is shredded as it passes through the cutter blades 32 , 32 , passes through the guide section 35 , and then is led out to the discharge port 40 . If the paper jams, the cutter blade 32 is reversed to remove the paper jam, but at this time the spacer 34 can be removed and the paper jammed in the housing 37 can be picked up by hand. Forcibly leading out to the discharge port 40 is not considered. In the embodiment of the present invention, paper (not shown) inputted from a paper input port 1 provided in a guide cover 2 is shredded by a pair of left and right cutter blades 5, and the shredded paper 10 is passed through a cover 11. It is led out to the constructed storage case body 12. The cutter blade 5 and the drive shaft 4 are connected by a known method, and the rotation of the drive shaft 4 is directly transmitted to the cutter blades 5, 5, and the cutter blades 5, 5 are operated in a normal rotation 13 reverse rotation 14 control. The cutter blades 5 are arranged on the drive shaft 4 alternately with spacers 6 (including a ring spacer 7 between them and the drive shaft 4), and are arranged in pairs on the left and right sides. Spacer 6 is supported only on drive shaft 4. The frame 3 surrounds the cutter blade 5 with a minimum space, and is provided with a receiving part 9 on the lower side. The pair of left and right spacers 6 include
It has a vertically long paper guide portion 16 extending inwardly on both sides, the lower end of which constitutes a protrusion 8. A portion of this protrusion 8 is configured to abut against the receiving portion 9 of the frame 3, and rotation is restricted during normal rotation 13. When a paper jam occurs, the drive shaft 4 is reversely rotated 14 to remove the paper, as shown in FIG. At this time, the paper jam 15 is removed from the protrusion 8 of the spacer 6 that was in contact with the frame receiving part 9.
It rotates inward. Thereby, the paper jam 15 is led out into the storage case body 12, and the paper jam is cleared. One embodiment of the present invention has been described above, but
It is not limited to this.

[Effect of the idea]

As detailed above, according to the paper shredding device of the present invention, 1. During normal normal rotation, the protrusion of the spacer comes into contact with the receiving part of the frame when guiding the shredded paper downward, thereby ensuring reliable operation. This is to restrict the outward rotation of the spacer. 2. When reversed when a paper jam occurs, the paper presses against the protrusion of the spacer, rotating the spacer inward, allowing the paper to be taken out reliably and easily. 3. The device is compact and therefore inexpensive.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of this invention. FIG. 1 is a central sectional view of the main part, and shows the drive shaft rotating normally. FIG. 2 shows the same reverse rotation as in FIG. 1. FIGS. 3 to 4 are diagrams showing the prior art, and are central sectional views of main parts. 3... Frame, 4... Drive shaft, 5... Cutter blade, 6... Spacer, 8... Protrusion, 9... Receiving part, 15... Paper jam paper.

Claims (1)

[Claims for Utility Model Registration] A pair of left and right drive shafts 4, 4, a plurality of opposing cutter blades 5, 5 held by the drive shafts 4, 4 and arranged on the axis, and the cutter blades. 5,5
Spacers 6, 6 and cutter blades 5, 5 are provided with a vertically long paper guide portion 16 disposed between them and facing inside the pair of drive shafts 4, 4, and have a protrusion 8 at the lower end thereof. A frame 3 that surrounds the pair of cutter blades 5, 5 having a receiving part 9 that can come into contact with a protrusion 8 that restricts the rotation of the protrusion 8 of the spacer 6, 6 during normal rotation, When the spacer 6 rotates normally for shredding, the shredded paper 10 comes into contact with the paper guide section 16, so that the protrusion 8 of the spacer 6 is moved between the two drive shafts 4,
4, and when the cutter blades 5, 5 are reversed, the protrusion 8 of the spacer 6 is rotatably supported inwardly with respect to the drive shafts 4, 4 due to the clogged paper 10. A paper shredding device featuring: