JPH05124392A - Electric pencil sharpener - Google Patents

Abstract

PURPOSE:To provide an electric pencil sharpener which can be used safely and obtained at lower cost wherein a power supply switch is used for also a switch which works at a receive box. CONSTITUTION:As a pencil sharpener is provided with a curved plate spring 5 between a power source switch 6 and a switch button 4 so as to detect the presence of a receive box 2 by the plate spring 5 and control the power source switch 6, the sharpener can be used safely with one switch and it can be obtained at lower cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric pencil sharpener having a switch that operates in a receiving box.

[0002]

2. Description of the Related Art Conventional electric pencil sharpeners of this type are generally equipped with a power switch and a safety switch that operates by closing a receiving case to close an electric circuit.

[0003]

However, in such a structure, a power switch and a box actuation switch are required respectively, the number of parts is increased and the assembly is complicated.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a safe and inexpensive electric pencil sharpener using one switch.

[0005]

In order to achieve the above object, the present invention has a curved leaf spring between a power switch and a switch button, and detects the presence or absence of a receiving box by the leaf spring, The opening and closing of the switch is controlled.

[0006]

According to the present invention, in the above-mentioned structure, when a pencil is inserted in a state in which the receiving case is attached to the body, the curved leaf spring is pushed by the receiving case detection button and spreads to the left and right. The switch is closed. Further, when the receiving box is removed from the body, the curved leaf spring that has been spread to the left and right returns to its original state, and the power switch is opened.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to.

As shown in the figure, a shaving box 2 is detachably attached to a body 1. When the receiving box 2 is attached or detached, the receiving box detection button 3 moves up and down.
Further, the curved leaf spring 5 is attached inside the body 1 so as to be slidable in the direction of the power switch 6 through the switch button 4 partially exposed to the pencil insertion port by inserting a pencil. . The box detection button 3 has an upper portion in contact with the curved portion of the leaf spring 5.

To explain the operation in the above structure, first, when the receiving case 2 is attached to the body 1, the receiving case detection button 3 is pushed up by the receiving case 2, and the curved leaf spring 5 detects the receiving case. By being pushed by the button 3, it is spread to the left and right. When a pencil is inserted in this state, the switch button 4 slides and the curved leaf spring 5 slides, the power switch 5 is pushed, the drive motor 7 is energized, and the pencil can be cut. Next, when the receiving box 2 is removed with the pencil inserted, the curved leaf spring 3 that has been pushed to the left and right returns to its original state, the power switch 6 is turned off, and the drive motor 7 is stopped.

Since the drive motor 7 does not rotate when the receiving box 2 is removed as described above, the rotating cutter 8 is not touched by the hand, which is extremely safe.

[0011]

As is apparent from the above description of the embodiments, according to the present invention, a curved leaf spring is provided between the power switch and the switch button, and the presence or absence of the receiving box is detected by the leaf spring. Since it is configured to control the opening and closing of the power switch, there is no need to add a switch that operates in the inbox separately, and even if you insert a pencil with the inbox removed, the cutter does not rotate, it is safe and cheaper An electric pencil sharpener can be provided.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of an electric pencil sharpener according to an embodiment of the present invention when a receiving box is inserted and a pencil is not inserted.

[Fig. 2] Same as above, partially cutaway front view of both the inbox and the pencil when inserted

[Fig. 3] Similarly, a partially cutaway front view when the pencil is inserted after removing the receiving box.

FIG. 4 is a partially cutaway side view of the same.

FIG. 5 is a partially cutaway top view of the same.

[Explanation of symbols]

 2 Inbox 3 Inbox detection button 4 Switch button 5 Leaf spring 6 Power switch

Claims (1)

[Claims] 1. A power switch provided on the main body, a switch button which partially faces the pencil insertion opening of the main body and slides by inserting a pencil into the pencil insertion opening, and a switch button arranged between the power switch and the switch button. It has a curved leaf spring that is installed, and a box detection button that is in contact with the curved portion of the leaf spring and that is displaced by attaching and detaching the box of shavings.The expansion and contraction of the leaf spring opens and closes the power switch. An electric pencil sharpener designed to control.