JPH0214476Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rechargeable pencil sharpener, and particularly relates to charging and cutting completion display in a rechargeable pencil sharpener equipped with a tip adjustment and cutting completion display mechanism.

Conventionally, in rechargeable pencil sharpeners, as shown in Fig. 4, a slide plate 3 equipped with a pencil insertion cap 1 and a display window 2 is attached to the top surface of the main body 4 so as to be slidable in the longitudinal direction. An indicator lamp 6 that matches the indicator window 2 is appropriately installed at a position where the provided pencil insertion hole 5 and the base 1 communicate with each other. However, with this configuration, when cutting a pencil, the display indicating the completion of cutting can be used because the slide plate 3 moves in the direction b and the display window 2 and display lamp 6 match, as shown in Fig. 5, but when charging, the slide plate 3 In order to return the battery to its original position in the direction a, the display window 2 and the display lamp 6 become misaligned, making it impossible to use the display lamp 6 for the purpose of indicating charging.

The present invention has been made in view of the above-mentioned disadvantages, and an object of the present invention is to provide a rechargeable pencil sharpener that can display both a charge display and a cutting completion display.

For this reason, the present invention provides a plurality of different display windows arranged in the sliding direction of the slide plate, and also provides an indicator lamp below the slide plate that matches both display windows at the sliding position of the slide plate. Moreover, the switch mechanism for switching between the charging circuit and the driving circuit built into the pencil sharpener body is constructed of a slide plate and a micro switch on the top of the body.

Therefore, during charging, the display lamp is located below one display window to make the user aware of the display during charging, and when cutting, the slide plate is moved to the bottom of the other display window. When the indicator lamp is positioned, the charging circuit is switched to the drive circuit at the same time, and the completion of cutting can be recognized at a glance by the lighting of the indicator lamp.Moreover, the shapes of both display windows are different, so it seems that the charging circuit is always charging. It is very easy to use as you can tell whether the cutting is completed or not.

The present invention will be explained in detail below with reference to the drawings.

The pencil sharpener main body 7 consists of a rectangular box made of synthetic resin, has a pencil insertion hole 8 and a light emitting diode 9 arranged in the upper part, and has a micro switch 10 attached to the tail part.

A slide plate 15 is slidably mounted on the top surface of the main body 7 and has a pencil insertion cap 11 and display windows 12 and 13 of different shapes, and has an inverted mountain-shaped protrusion 14 on the back surface. includes a blade holder 16 with a cutting blade (not shown) communicating with the pencil insertion hole 8, a transformer 17 and diodes 18, 19 constituting a charging circuit, and a DC motor 20 that rotationally drives the blade holder 16. Protective resistance 21
and a rechargeable battery 22 that supplies current to the electric motor 20.
It stores.

A shavings case 23 is provided in the main body 7 from the side thereof.
A safety switch 24 that is turned on only when the pencil is inserted, and a start switch 25 that is turned on only when a pencil passes through the pencil insertion hole 8 are provided. A cutting completion display switch 26 is provided which is turned on when pressed by the tip of the core at the time of completion.

A current is supplied to the rechargeable battery 22 from an insertion plug 27 that is removably housed on one side of the main body 7.

Next, the operation of the present invention will be explained.

FIG. 1 shows the state of the pencil sharpener when it is stored, with the display lamp 9 positioned below the triangular display window 13, and the protrusion 14 contacting the micro switch 10 to keep the switch 10 in the ON state. . When the plug 27 is inserted into an outlet (not shown) in this state, a current is induced from the primary side to the secondary side of the transformer 17, the charging circuit becomes conductive, the light emitting diode 9 lights up, and the charging display is displayed. It can be recognized by the triangular display window 13.

Furthermore, during cutting, when the slide plate 15 is moved in the direction b to bring the pencil insertion mouthpiece 11 and the pencil insertion hole 8 into communication, the display lamp 9 is positioned below the circular display window 12, and the protrusion 14 is connected to the micro switch. 1
0 and sets the switch 10 to the OFF state. When the shavings case 23 is attached to the main body 7, the safety switch 24 is turned on, and when the pencil is inserted from the base 11 toward the blade holder 16, the start switch 25 is turned on, and the electric motor 2 is turned on.
0 is driven and cutting progresses. When cutting is completed, the cutting completion display switch 2 is activated by pressing the tip of the core.
6 is turned on, the light emitting diode 9 lights up at the same time, and the circular display window 12 indicates the completion of cutting.

Note that when the slide plate 15 does not tightly cover the pencil insertion hole 8 during charging, the micro switch 10 is not pressed by the protrusion 14 and is in an open state, and no current flows to the light emitting diode 9 and the light remains off. becomes.

As described above, the present invention includes a main body that is equipped with a charging mechanism and a cutting completion display mechanism, and has a pencil insertion hole and an indicator lamp that lights up when charging and when cutting is completed on the top, and a main body that is slidably mounted on the top surface of the main body. In the rechargeable pencil sharpener, the rechargeable pencil sharpener is equipped with a slide plate, and the slide plate is provided with a pencil insertion cap that slides to fit the pencil insertion hole, and a display window that also slides to fit the indicator lamp. By providing a switch mechanism on the slide plate to switch between the charging circuit and the drive circuit, one indicator lamp can have two display functions, and both charging and cutting completion can be displayed, improving usability. In addition, since the indicator lamp will not light up unless the slide plate tightly closes the pencil insertion hole during charging, it is possible to know that the position of the slide plate is inappropriate.

[Brief explanation of the drawing]

Figure 1A is a vertical cross-sectional view of the top of a rechargeable pencil sharpener according to an embodiment of the present invention, B is a plan view of its slide plate, Figure 2A is a vertical cross-sectional view of the top during operation, and B is a vertical cross-sectional view of the same. A plan view of the slide plate, FIG. 3 is a circuit diagram, FIG. 4 is a vertical sectional view of the entire main body of the conventional example corresponding to FIG. 1A, and FIG. 5 is a vertical sectional view of the conventional example corresponding to FIG. 2A. It is. 7... Main body, 12, 13... Display window, 10...
Micro switch (switch mechanism), 15... slide plate, 9... light emitting diode (display lamp).

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A main body that is equipped with a charging mechanism and a cutting completion display mechanism and has a pencil insertion hole and an indicator lamp that lights up when charging and when cutting is completed on the top, and a device that slides on the top surface of the main body. A rechargeable pencil comprising a slide plate that can be attached to the slide plate, and the slide plate is provided with a pencil insertion cap that slides to fit the pencil insertion hole, and a display window that also slides to fit the display lamp. A rechargeable pencil sharpener, characterized in that the slide plate is provided with a switch mechanism for switching between a charging circuit and a driving circuit. (2) The rechargeable pencil sharpener according to claim 1, wherein the slide plate is provided with a plurality of different display windows that selectively match the display lamps by sliding.