JPH09272652A - Tape cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a cutter which generate sound or melody, stores respective parts inside a drum and permits rotation to be detected easily and with an inexpensive structure. SOLUTION: A sound generating circuit 12 and a rotation detecting part 14 are fitted on a substrate 6 stored inside a drum. Inside the case 30 of the rotation detecting part 14, a metallic ball 36, and the first and second electrodes 32, 34 which have continuity through the metallic ball 36 are fitted. When the detected signals from the first and second electrodes 32, 34 are applied to the sound generating circuit 12, sound or melody is outputted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cutter which produces a sound such as a voice or a melody sound by pulling out an adhesive tape.

[0002]

2. Description of the Related Art A tape cutter originally has a function of holding an adhesive tape rotatably and easily pulling out and cutting only a necessary amount. However, in recent years, stationery items also have amusement and play. Various properties have been commercialized as a result of the demand for the property. For example, there are a wide variety of things, such as adopting colorful exterior colors and treating animals and characters.

[0003]

Many of the conventional tape cutters have a visual characteristic such as a change in shape, and at present, entertainment and playability are relatively low. .

The present invention has been made in view of the above conventional problems, and an object thereof is to generate a voice or a melody when an adhesive tape is used, and in particular, each portion related to sound generation holds the adhesive tape. Storing inside the drum,
An object of the present invention is to provide a tape cutter that can detect rotation with a simple and inexpensive structure.

[0005]

A tape cutter of the present invention is a tape cutter comprising a base portion and a drum portion rotatably supported by the base portion and holding an adhesive tape, the tape cutter being housed in the drum portion. A substrate that rotates together with the drum portion, a sound generation circuit provided on the substrate, a battery that supplies power to the sound generation circuit, and a direction that is attached to the substrate and is the same as the circumferential surface of the drum portion. A case having an inner peripheral surface, a metal ball moving on the inner peripheral surface as the drum part rotates, and a metal ball arranged on the inner peripheral surface and conducting through the metal ball to generate the sound. And a rotation detecting section composed of first and second electrode sections for applying a detection signal to the circuit.

In addition, an inclined surface is formed at an end of the inner peripheral surface of the case of the rotation detecting portion, and the inclined surface causes the metal ball to move between the first and second electrode portions. It is also the one.

Further, first and second shaft portions provided at the center of rotation of the drum portion and connected to the sound generating circuit and the battery, respectively, and the first and second shaft portions of the base portion. A third portion provided on a support portion for supporting the first and second shaft portions and electrically connecting the sound generating circuit and the battery.
And an electrode part of.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the tape cutter of the present invention, a sound generating circuit and a rotation detecting portion are provided on a substrate housed in the drum portion. The rotation detecting unit rotates with the rotation of the drum unit, and a metal ball rolling on the inner circumferential surface of the case is placed between the first and second electrode units provided on the inner circumferential surface. As a result, the first and second electrode portions are electrically connected via the metal sphere. As a result, the detection signal is applied to the sound generation circuit, and a voice or melody sound is output.

Further, the first and second shaft portions provided at the center of rotation of the drum portion are connected to the sound generating circuit and the battery, respectively, and the first and second shaft portions are provided on the base portion side. Electricity is supplied to the sound generating circuit by conducting electricity through the provided third electrode portion. Therefore, by removing the drum part from the base part, the first and second shaft parts are isolated from each other,
The sound generation circuit can be turned off to stop the sound generation.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing the structure of a rotation detecting portion and a sound generating circuit of a tape cutter in one embodiment of the present invention, FIG. 2 is an external view of the tape cutter in this embodiment, and FIG. 2 is an exploded perspective view of the drum portion, and FIG. 4 is an exploded perspective view of the rotation detecting portion shown in FIG.

As shown in FIG. 2, in appearance, basically, similar to a general tape cutter, a base 2 and a substantially concave support 2a provided on the base 2 are provided at the center of rotation thereof. The drum portion 4 is rotatably supported by hooking the provided shaft portion 4a. The drum portion 4 holds the adhesive tape by being fitted inside the ring-shaped adhesive tape, and in the present embodiment, has a columnar shape with a hollow inside.

As shown in FIG. 3, the drum portion 4 can be divided into right and left portions from the center of the peripheral surface 4b, and the substrate 6 is housed inside. The substrate 6 has a disc shape and fits inside the drum portion 4 and rotates together with the drum portion 4. On the surface of the substrate 4, a sound generation circuit 12 including a circuit block 8 and a speaker 10, and a rotation detection unit 14 that detects rotation of the drum unit 4.
And the battery 16 is attached.

As shown in FIG. 1, the sound generating circuit 12 has its waveform shaped by inputting the output signal of a differentiating circuit composed of a capacitor 18 and a resistor 20 for inputting the detection signal from the rotation detecting section 14. A one-shot circuit 22 that outputs a single-shot pulse, a timer 24 that operates for a fixed time when its output signal is input to a trigger input, and this timer 24
A sound signal output circuit 26 that outputs a sound signal such as a voice signal or a melody signal during operation, a drive circuit 28 such as an amplifier that inputs the sound signal and outputs a drive signal, and is driven by the drive signal. Speaker 10 that produces sound
And is composed of

As shown in FIGS. 1 and 4, the rotation detector 14 has a cylindrical case 30 having a hollow interior, and first and second electrode portions provided therein. 32 and 34, and a metal ball 36 rolling on the inner circumferential surface 30a of the case 30 along the surface.
As shown in FIG. 4, the case 30 in the present embodiment is dividable from the center of its circumferential surface, and the first and second electrode portions 32 are respectively provided in the divided case members 30b and 30c. , 34 are attached. This first
And the second electrode portions 32 and 34 are a disc-shaped main body 32a,
34a and a plurality of projecting portions 32b, 34b projecting from the main bodies 32a, 34a at a predetermined interval so as to face each other.
And the notch 30d of the case member 30b and the case member 30.
It is composed of terminal portions 32c and 34c which are respectively led out from the hole 30e of c and connected to the substrate 6. The protruding portion 32 of the first and second electrode portions 32 and 34
The b and 34 b are arranged on the inner peripheral surface 30 a of the case 30 so as to face each other with a space allowing simultaneous contact with the metal sphere 36.

Next, the operation of the tape cutter of this embodiment having the above structure will be described. First, when the adhesive tape is pulled out, the drum portion 4 rotates around the shaft portion 4a together with the adhesive tape. When the drum unit 4 rotates, the substrate inside the drum unit 4 also rotates, which causes the rotation detecting unit 14 to rotate.
Rotate around. In the case 30 of the rotation detecting unit 14, the inner peripheral surface 30 a is the peripheral surface 4 of the drum unit 4.
Since it is oriented in the same direction as b, the rotation of the substrate 6 causes the metal sphere 36 in the case 30 to move to the inner circumferential surface 30a of the case 30.
Will roll over. At this time, the metal sphere 36 causes the protrusions 32b and 34b of the first and second electrode portions 32 and 34 to be formed.
When passing between the two or stopping between them, the first and second electrode portions 32 and 34 are electrically connected through the metal balls 36. Since the first and second electrode portions 32 and 34 are connected to the battery 16 and the sound generating circuit 12, respectively, when the first and second electrode portions 32 and 34 become conductive, a voltage signal is sent to the sound generating circuit 12. Is applied. When the sound generation circuit 12 inputs this detection signal, a pulse is output from the one-shot circuit 22 and the timer 24 which has input this pulse is activated, whereby the sound signal output circuit 26 operates and outputs a sound signal. Then, the circuit 28 to which the sound signal is input drives the speaker 10 to generate a sound. After that, when the output of the predetermined sound signal is completed, the sound signal output circuit 26 outputs an output completion signal, and the timer 24 is reset by the output completion signal and the timer 24 is stopped and the sound signal output circuit 26 outputs the sound signal. The output of the sound signal of is also stopped. The above operation is repeated every time the adhesive tape is pulled out and the drum portion 4 rotates, and a sound is generated.

FIG. 5 is a sectional view showing an example of a partial modification of the rotation detector 14 shown in FIG. The case 30 of the rotation detecting portion 14 is provided with inclined surfaces 30f that descend toward the center of the inner peripheral surface 30a at both ends in the width direction of the inner peripheral surface 30a. By providing this inclined surface 30f, the metal sphere 36 is surely secured to the first and second electrode portions 3.
It can be positioned for rolling between the two, 34 protrusions 32b, 34b.

FIGS. 6, 7 and 8 are a sectional view of the drum portion, a perspective view of the base portion and a wiring diagram showing a partially modified example of the tape cutter shown in FIG. In this modified example, FIG.
As shown in FIG. 7, the drum unit 4 is removed from the base unit 2 so that the power supply from the battery 16 to the sound generating circuit 12 is cut off. That is, in this modified example, as shown in FIG. 6, the shaft portion 4a supporting the drum portion 4 is divided into left and right sides with the substrate 6 interposed therebetween, and the divided first and second shaft portions 4c and 4d are separated. They are electrically separated and connected to a battery 16 and a sound generation circuit 12 as shown in FIG. In addition, as shown in FIG. 7, the support portions 2a and 2b of the base portion 2 that respectively support the first and second shaft portions 4c and 4d of the drum portion 4 are provided with a third portion provided inside the base portion 2. The bearings 38a and 38b at the ends of the electrode portion 38 are arranged. Therefore, when the drum unit 4 is attached to the base unit 2,
The first and second shaft portions 4c and 4d are the third electrode portion 38.
The bearing portions 38a and 38b of the above are contacted and connected via the third electrode portion 38. As a result, the sound generation circuit 12 is connected to the battery 16, and when the detection signal from the rotation detection unit 14 is generated as described above, the power is supplied from the battery 16 to generate sound. When the drum unit 4 is removed from the base unit 2, the first and second shaft units 4c and 4d are electrically separated from each other, and even if the drum unit 4 is rotated and a detection signal is generated, the sound is emitted from the battery 16. Since the power supply to the generation circuit 12 is cut off, no sound is output from the sound generation circuit 12.

In this embodiment, only the third electrode 38 is provided in the base portion 2, but the third electrode portion 38 is provided.
Not only the battery 16 but also the base 2 may be arranged in the base 2.

A cap made of an insulating material may be attached to one or both of the first and second shaft portions 4c and 4d,
It is also possible to stop the sound generation by attaching a cover or the like made of an insulator to one or both of the bearing portions 38a and 38b of the third electrode portion 38.

[0020]

According to the present invention, when the drum portion is rotated by pulling out the adhesive tape, a sound is generated, and in particular,
Since the rotation of the drum portion can be reliably detected with a simple structure, it is possible to provide a tape cutter that emits sound with a simple and inexpensive structure.

Further, since the substrate is disposed in the drum portion and the rotation detecting portion, the sound generating circuit and the battery are directly attached to the substrate and housed in the drum portion, it is possible to miniaturize and unitize the drum portion. It is possible to easily replace or change the pedestal or the substrate, and it is possible to easily cope with tape cutters having different shapes and sizes.

Furthermore, since the power supply can be cut off and the power can be turned off simply by removing the drum part from the base part, noise is prevented from being generated when the adhesive tape is replaced, and the battery is wasted. Can be prevented.

[Brief description of drawings]

FIG. 1 is a structure / circuit configuration diagram showing a configuration of a rotation detection unit and a sound generation circuit of a tape cutter according to an embodiment of the present invention.

FIG. 2 is an external view of the tape cutter in this embodiment shown in FIG.

FIG. 3 is an exploded perspective view of the drum unit shown in FIG.

FIG. 4 is an exploded perspective view of a rotation detection unit shown in FIG.

5 is a cross-sectional view showing a partially modified example of the rotation detector shown in FIG.

FIG. 6 is a cross-sectional view of a drum portion showing a partially modified example of the tape cutter shown in FIG. 1 and the like.

FIG. 7 is a perspective view of a base portion showing a partially modified example of the tape cutter shown in FIG. 1 and the like.

FIG. 8 is a wiring diagram of the tape cutter shown in FIGS. 6 and 7.

[Explanation of symbols]

 2 units 2a, 2b Supporting part 4 Drum part 4a Shaft part 4b Circular surface 4c, 4d 1st and 2nd shaft part 6 Board 12 Sound generating circuit 14 Rotation detecting part 16 Battery 30 Case 30a Internal peripheral surface 32, 34 1st and 2nd electrode part 32b, 34b protrusion part 36 metal sphere 38 3rd electrode part 38a, 38b bearing part

Claims (3)

[Claims] 1. A tape cutter comprising a base portion and a drum portion rotatably supported by the base portion and holding an adhesive tape, wherein a substrate housed in the drum portion and rotatable with the drum portion. A sound generating circuit provided on the substrate; a battery for supplying electric power to the sound generating circuit; a case attached to the substrate having an inner peripheral surface in the same direction as the peripheral surface of the drum portion; A first metal ball that moves on the inner circumferential surface as the drum rotates, and a metal ball that is disposed on the inner circumferential surface and conducts electricity through the metal ball to apply a detection signal to the sound generating circuit. And a second electrode portion,
A tape cutter characterized by comprising a rotation detecting section composed of. 2. An inclined surface is formed at an end of an inner peripheral surface of a case of the rotation detection unit, and the inclined surface causes the metal ball to move between the first and second electrode portions. The tape cutter according to claim 1, wherein: 3. A tape cutter comprising a base portion and a drum portion rotatably supported by the base portion and holding an adhesive tape, wherein a substrate housed in the drum portion and rotatable with the drum portion. A sound generating circuit provided on the substrate; a battery for supplying electric power to the sound generating circuit; a case attached to the substrate having an inner peripheral surface in the same direction as the peripheral surface of the drum portion; A first metal ball that moves on the inner circumferential surface as the drum rotates, and a metal ball that is disposed on the inner circumferential surface and conducts electricity through the metal ball to apply a detection signal to the sound generating circuit. And a second electrode portion,
A rotation detecting section configured by: a first and a second shaft section provided at a rotation center of the drum section and respectively connected to the sound generating circuit and the battery; and the first and second shaft sections of the base section. A third electrode portion provided on a support portion that supports the second shaft portion and contacting the first and second shaft portions to electrically connect the sound generating circuit and the battery. Tape cutter.