JPH0143172Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a document shredding device, and more particularly to an improvement of a document shredding device that can perform forward and reverse rotation with a single switch button.

[Technical background of the invention and its problems]

A document shredding device that shreds documents, etc. generally includes a shredding cutter that is rotationally driven by an electric motor,
It has a structure that includes a switch button that gives commands to rotate the electric motor forward or reverse. As this switch button, a switch button that gives a command to rotate the electric motor in the forward direction or in the reverse direction has been developed in consideration of the speed of operation.

Such a switch button is arranged to be able to swing between a forward rotation side switch position and a reverse rotation side switch position about a fulcrum. In other words, to rotate the electric motor in the normal direction, one side (normal rotation side) of this switch button is pressed, and the switch button swings around the fulcrum and locks at a predetermined position, commanding the electric motor to rotate in the normal direction. give. This position is called the forward rotation side switch position of the switch button. To stop the electric motor, the other side of this switch button (stop, reverse side) is pressed, and the forward rotation side switch position is unlocked.
The switch button swings and rotates around the fulcrum, becomes approximately horizontal, and gives a stop command to the electric motor. This position is called the stop switch position of the switch button. Furthermore, when reversing the electric motor, the stop and reverse sides of the switch button are pressed in the same way as when stopping, the switch button swings around the fulcrum, assumes a predetermined position, and gives a reversal command to the electric motor. .
This position is called the reverse side switch position of the switch button.

In such a document shredding device, in order to stop the electric motor while it is rotating in the forward direction, the stop switch button and the reverse side of the switch are pushed with a predetermined force, and the forward rotation switch position is unlocked. The switch button is placed in the stop switch position. Furthermore, in order to reverse the rotation, the stop and reverse sides of the switch button are pressed with substantially the same force as when stopping, and the switch button is brought to the reverse side switch position.

However, in order to set the switch button to the stop switch position and the reverse side switch position, the switch button is pressed with approximately the same force.
When stopping an electric motor that is rotating in the normal direction, the switch button may be swung to the reverse switch position depending on the amount of force applied even if there is no intention to reverse the motor. As a result, the electric motor unnecessarily rotates in reverse, causing problems such as unnecessary wear of the shredding cutter and loss of power.

[Purpose of invention]

The present invention has been devised in consideration of these points, and an object of the present invention is to provide a document shredding device that can be operated reliably using a single switch button, but with fewer erroneous operations.

[Summary of the idea]

The present invention is a document shredding device equipped with a shredding cutter rotatably driven by an electric motor and a switch button that gives a command to rotate the electric motor forward or reverse, the switch button having a fulcrum. The center can swing between a forward rotation side switch position and a reverse rotation side switch position, and a stop switch position is provided between the forward rotation side switch position and the reverse rotation side switch position. The side switch position is characterized by an elastic member that comes into contact with the switch button when the switch button is swung toward the reverse side switch position.

According to the present invention, in order to set the switch button to the reverse side switch state, the switch button must be pressed with enough force to compress the elastic member that is in contact with the switch button. Therefore, when changing the switch button from the forward rotation switch position to the stop switch position, the switch button will not be erroneously swung to the reverse rotation switch position.
Therefore, the electric motor will not rotate in reverse either.

[Example of idea]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 are diagrams showing an embodiment of a document shredding device according to the present invention. Reference numeral 11 in the figure
1 is a casing of a document shredding device, and an input port 13 into which documents and the like are input is opened at the upper end of the casing 11. A shredding cutter 15 rotatably driven by an electric motor 17 is disposed in the casing 11 below the input port 13 . A waste box 19 is provided below the shredding cutter 15 in which the shredded waste shredded by the shredding cutter 15 is dropped and stored. Furthermore, a switch button 21 is attached to the upper part of the casing 11 for giving a command to rotate the electric motor 17 forward or reverse.

FIG. 1 is a partially enlarged view showing the switch button 21. FIG. As shown in the figure, the switch button 21 is capable of swinging about a fulcrum 28 provided approximately at the lower center of the switch button 21.

One side of the switch button 21, for example, the forward rotation side 21
A forward rotation switch 27 is provided below the switch button 21a, and a forward rotation lock pawl 27 is provided below the tip of the forward rotation side 21a of the switch button.
3 is provided. This forward rotation lock claw 23
If the tip of the forward rotation side 21a of the switch button is hooked, it becomes possible to continue operating the forward rotation switch 27 on the back side of the forward rotation side 21a of the switch button. In this manner, when the forward rotation switch 27 is operated (as shown in FIG. 5), the switch button 21 is in the forward rotation side switch position.

On the other side of the switch button 21, for example, at the bottom of the stop/reverse side 21b, a reverse switch 29 is provided close to the stop/reverse side 21b of the switch button, and further at the tip of the reverse/stop side 21b of the switch button. A butting rubber 25 is provided at the portion.
By compressing this abutting rubber 25, it is possible to stop the switch button and operate the reverse switch 29 on the back side of the reverse side 21b. When the reverse rotation switch 29 is operated in this manner (as shown in FIG. 4), the switch button 21 is in the reverse rotation side switch position. When the back surface of the switch button 21 does not come into contact with either the forward rotation switch 27 or the reverse rotation switch 29, the switch button 21 is in a substantially horizontal stop switch position.

Next, the operation of this embodiment having such a configuration will be explained.

The document shredding device starts with the forward rotation side 21 of the switch button.
When the surface of a is pressed and the tip of the forward rotation side 21a of the switch button is caught by the forward rotation lock pawl 23, the switch button 21 is placed in the forward rotation side switch position as shown in FIG. Then, the forward rotation switch 27 is activated, and the shredding cutter 15 is rotated in the forward direction by the electric motor 17. Documents, etc. input from the input port 13 are bitten into the space between the shredding cutters 15, and are continuously shredded into shredded scraps, which fall and are stored in the scrap box 19.

To stop this document shredding device, the switch button is stopped, the surface of the reverse rotation side 21b is pressed, and the tip of the forward rotation side 21a of the switch button is pressed against the forward rotation lock claw 2.
3, switch button 21 becomes normal rotation switch 2.
7 and the reversing switch 29 are in the stop switch position, and the electric motor 17 is stopped. In this case, the switch button stops,
The force for pushing the surface of the reverse rotation side 21b is sufficient to remove the tip of the forward rotation side 21a of the switch button from the forward rotation lock pawl 23, so a large force is not required. Further, when the switch button is in the stop switch position, the abutting rubber 25 supports the switch button 21, so that the switch button 21 can be easily maintained in a substantially horizontal state.

When this document shredding device is reversed due to a paper jam or the like, the switch button is stopped, the surface of the reverse side 21b is pressed, the switch button is stopped, and the abutment rubber 25 provided at the tip of the reverse side 21b is compressed. When the switch button is stopped, the reverse side of the reverse side 21b operates the reverse switch 29. In this way, the switch button 29 is in the reverse rotation side switch position as shown in FIG. 4, and the electric motor 17 is rotated in the reverse direction.
Documents, etc. are discharged from the shredding cutter 15.
In this case, the force that presses the surface of the stop/reverse side 21b of the switch button is required to be large enough to compress the abutment rubber 25.

In order to move the switch button 21 to the reverse rotation side switch position in this way, a large force is required to compress the abutment rubber 25, so it is necessary to move the switch button 21 from the forward rotation side switch position to the stop switch position. When switching to the reverse switch position, there is no possibility of accidentally swinging the switch to the reverse switch position. Therefore, the electric motor 17 will not rotate in reverse, causing unnecessary wear on the shredding cutter or loss of power. The operating force for setting the switch button 21 to the reverse switch position can be easily adjusted by changing the elasticity of the abutment rubber.

In this embodiment, when the switch button 21 is in the forward rotation switch position or the reverse rotation switch position, the switch button 21 directly contacts the forward rotation switch 27 or the reverse rotation switch 29 and operates the switch button 21. However, the present invention is not limited to this. For example, when the forward rotation switch 27 and the reverse rotation switch 29 are moved away from the switch button 21 and the switch button 21 is at the forward rotation side switch position or the reverse rotation side switch position, the respective positions can be adjusted by the link mechanism. It can also be transmitted to the forward rotation switch 27 or the reverse rotation switch 29.

In addition, although a rubber material is shown as an example of the elastic material that comes into contact with the switch button when the switch button is swung in the direction of the reverse switch position, a metal spring material, a synthetic resin material, or the like may also be used.

[Effect of idea]

As explained above, in order to move the switch button to the reverse switch position, a large force is required to compress the abutting rubber.
When changing the switch button from the forward rotation side switch position to the stop switch position, there is no possibility of accidentally holding the switch button to the reverse rotation side switch position. Therefore, unnecessary reversing operations are avoided, thereby avoiding unnecessary wear of the shredding cutter and loss of power.

In addition, by varying the elasticity of the abutment rubber, the degree of force required to hold the switch button to the reverse switch position can be adjusted.
Driving operations will be optimized.

[Brief explanation of the drawing]

FIG. 1 is a partially enlarged view showing an embodiment of a switch button of a document shredding device according to the present invention, and FIG. 2 is a side sectional view showing an embodiment of a document shredding device according to the present invention.
Figure 3 is a sectional view taken along the line in Figure 2, Figures 4 and 5 are partially enlarged views of the switch button, Figure 4 shows the reverse rotation switch position, and Figure 5 shows the forward rotation switch position. The case is shown below. 11...Casing, 13...Inlet, 15...
...Cutter for shredding, 17...Electric motor, 19...
...Scrap box, 21a, 21b...Switch button, 23...
...Forward rotation lock claw, 25...Butting rubber, 27
...Forward rotation switch, 28...Fully point, 29...Reverse rotation switch.

Claims (1)

[Claims for Utility Model Registration] 1. A document shredding device comprising a shredding cutter rotatably driven by an electric motor and a switch button for giving a command to rotate the electric motor forward or reverse; , is capable of swinging between a forward rotation side switch position and a reverse rotation side switch position around a fulcrum, and a stop switch position is provided between the forward rotation side switch position and the reverse rotation side switch position. . A document shredding device, wherein an elastic member is disposed at the reverse switch position, the elastic member coming into contact with the switch button when the switch button is swung toward the reverse switch position. 2. The document shredding device according to claim 1, wherein the elastic member is arranged so as to come into contact with the back surface of the switch button. 3. The document shredding device according to claim 1, wherein the elastic member is a rubber member.