KR20050064865A - Folder type piano - Google Patents

Abstract

The present invention relates to a folding piano,

In the upper plate 41 in which each key is engraved, the lower plate 43 which is mutually bonded to the edge portion of the upper plate 41 to form a rectangular inner space therebetween, and the inner space between the upper plate 41 and the lower plate 43. It is connected with the keyboard part 40 including the inserted circuit board 42, and the connection end which protruded in the upper end surface of this keyboard part 40, and is mutually electrically connected with the circuit board 42 drawn out through this connection end. Main unit 30 incorporating a connected control device 33, a power supply 34 for supplying power to the control device 33, and a speaker 32 for sounding an electrical signal from the control device 33. ),

When playing the piano, the main body portion 30 and the keyboard portion 40 are used in an unfolded state, and when carrying, the main body portion 30 is folded onto the smooth surface in the keyboard portion 40, and then the keyboard portion 40 By folding the remaining portion of the) toward the body portion to form a shape that surrounds it,

Not only is it easy to carry, but it is also effective in providing a folding piano that is completely free from the installation floor state and has a beautiful appearance after folding.

Description

Folding type piano {folder type piano}

The present invention relates to a folding piano, and more particularly, it is easy to carry by folding the whole structure, as well as the appearance after folding is beautiful regardless of the installation floor state at all. This is about a folding piano.

Due to the development of the electronics industry, products that are light in weight and simplified to be incomparable with the prior art are being developed and marketed in various ways.

For example, after the development of portable electronic organs that eliminated the transport constraints of ordinary pianos or organs that weighed a considerable amount of weight, the trend of light weight continued, and in recent years, key boards, or keyboards, have been made of thin rubber material. A rollable piano (see FIGS. 1 and 2) has been released.

In the scroll piano, a flexible circuit board 22 is inserted between the upper plate 21 and the lower plate 23, which is a silicone rubber material as the main component constituting the keyboard portion 20, and each keyboard on the upper plate 21 is inserted. Pressing causes the corresponding point on the circuit board 22 placed below to be connected to ring the main body 10 and the speaker 12 in the main body 11.

The scroll piano having such a configuration has a problem in that it is inferior in sound quality than a conventional portable electronic organ, but because it is extremely easy to carry, at least as a hobby item of a pediatric scale trainer or a youth group, its value is recognized. It is true.

However, in the case of the scroll piano having the above-described characteristic configuration, the focus is on weight reduction and flexibility of the keyboard portion, and in reality, there is a problem in that the use place is restricted.

That is, the keyboard part 20 made of a thin rubber material has flexibility enough to be wound around the main body part 10 on the side thereof, whereas when the installation bottom surface is weak, such as a grass, the user uses the finger with the keyboard. There was a problem that the sound was not sounded properly even when the unit 20 was pressed.

This is because, when the user presses each key, the corresponding point on the circuit board 22 is not connected, and the entire keyboard portion 20 made of a thin rubber material falls down together with the soft bottom surface.

In addition, there is a problem that the overall shape when the keyboard is wound around the main body for portable purposes is not neat as a musical instrument, but has an unsightly image of a wrapped towel.

In addition, in winding the keyboard portion around the main body, various operation buttons projected to the outside of the main body, that is, the tone button 13a, the vibration button 13b, and the volume dial 13c. Also, it is pointed out that there should be a slight gap between the keyboard part as a thin rubber material and the main body part as a general synthetic resin material so that the on / off switch 13d and the like are not pressed to cause a failure. You can't help it.

The present invention has been made in view of such a conventional problem, and is easy to carry, and can be played without regard to the installation floor state at all, and also provides a folded piano with a beautiful appearance after folding. There is a purpose.

The folding piano of the present invention for achieving the above object, unlike the conventional structure in which the main body is wound around the main body by connecting the main body to the right end of the keyboard portion made of a relatively thin rubber material, By bonding the synthetic resin reinforcement plate having its own rigidity to the lower end surface of the silicone rubber material and connecting the main body portion to the upper end surface of the keyboard portion, the main body portion is folded into a smooth surface in the keyboard portion when carrying. Next, there is a feature to form the form to surround the remaining portion of the keyboard portion folded to the body portion. (First embodiment)

In some cases, the synthetic resin material reinforcing plate may be eliminated by reinforcing the lower plate as the silicone rubber material constituting the keyboard portion to a sufficient thickness to have sufficient self rigidity. (Second embodiment)

Moreover, the structure which made the said lower board itself which comprises a keyboard part into sufficient rigid synthetic resin material instead of a rubber material may be sufficient. (Third embodiment)

EMBODIMENT OF THE INVENTION Hereinafter, based on an accompanying drawing, the folding piano of an Example of this invention is demonstrated in detail.

According to the invention of the folded piano according to the embodiment of the present invention, that is, a plan view of the unfolded state of FIG. 3 and FIG. 4 of its schematic electrical configuration, and FIG. Is a top plate 41 in which each key is engraved, a bottom plate 43 which is joined to an edge of the top plate 41 to form a rectangular internal space therebetween, and between the top plate 41 and the bottom plate 43. A keyboard portion 40 including a circuit board 42 inserted into an internal space, a connection end projecting on an upper end surface of the keyboard part 40, and a circuit board 42 drawn out through the connection end; A main body having a control device 33 electrically interconnected, a power supply 34 for supplying power to the control device 33, and a speaker 32 for sounding an electrical signal from the control device 33. It is comprised including the part 30.

FIG. 5 is a view illustrating a first embodiment of the folding piano according to the present invention, and as a synthetic resin material having its own rigidity on the lower surface of the lower plate 43, which is a flexible silicone rubber material constituting the keyboard portion 40, FIG. The reinforcing plate 44 is bonded.

The reinforcement plate 44 has its own rigidity so as not to be wobbly even when the key portion 40 is placed on a soft floor such as a grass, and thus plays a main role of enabling normal piano performance even on a soft floor. It is absent.

As long as it can play such a role, it does not specifically limit the kind of synthetic resin material, Of course, it can also be materials other than synthetic resin material.

In addition, as mentioned above, the upper plate 41 and the lower plate 43 are both made of silicone rubber, but the upper plate 41 has a general thin thickness so as to have flexibility, while the lower plate 43 has sufficient self The case where the synthetic resin reinforcement plate is removed by reinforcing to a thickness sufficient to have rigidity is presented as a folding piano of a second embodiment of the present invention.

As also mentioned above, a case in which the lower plate 43 itself is made of sufficient rigid synthetic resin material is presented as a folding piano of the third embodiment of the present invention.

On the other hand, as shown in FIG. 5, the folding groove 44b is formed on the lower end surface of the reinforcement board 44 in the width direction of the keyboard part 40, thereby making it easier to fold the keyboard part 40 and to fold it. The shape also forms a rectangular cross section as in FIG.

If the folding grooves 44b are not formed, the folding shapes as shown in FIG. 7 are of course formed, and these folding shapes will be entirely up to the taste of the consumer.

In addition, the folding groove 44b can also be applied to the folding piano of the second embodiment of the present invention having a structure without the reinforcing plate 44. In this case, the lower plate 43 having its own rigidity by having an appropriate thickness is provided. What is necessary is just to form a folding groove on the bottom surface of the ().

On the other hand, with reference to Figures 3 and 4 will be described the operation or operation of the folding piano of the embodiment of the present invention.

That is, in the folded-type piano of the expanded state shown in FIG. 3, when each key on the upper board 41 in the keyboard part 40 is pressed, the flexible circuit board inserted in the internal space between the upper board 41 and the lower board 43 is shown. The corresponding point on the 42 is connected and, as a result, the speaker 33 as the components of the control device 33 in the main body 30 electrically connected to the circuit board 42, i.e., the control panel, are operated. (speaker) 32 will sound the notes of the scale.

After the performance is finished, the main body portion 30 is folded into the keyboard portion 40 in the numerical order as shown in Fig. 3, and then the right end of the keyboard portion 40 is first folded toward the center portion thereof. Then, the remaining left end is also folded toward the center to obtain a folded form as shown in FIG. 6 or 7.

In order to achieve a more beautiful and secure folded state, the attachment plate (at a suitable point on the left end of the upper plate 41 and the lower surface of the reinforcing plate 44 (first embodiment) or the lower surface of the lower plate 43, respectively) By providing 41a) and the magnet 44a, the folding is completed and the attachment plate 41a and the magnet 44a are brought into close contact with each other.

On the other hand, in the connection end part which protrudes on the upper end surface of the said keyboard part 40, and provides the connection means with the main-body part 30, as shown in FIG. 3, the upper board 41 surrounding the circuit board 42 was shown. ) And the corresponding portion of the lower plate 43 to be more flexible at the time of folding.

On the other hand, by extending the narrow upper plate 41 and the lower plate 43 on both sides of the circuit board 42, it is possible to maintain the appropriate strength while maintaining the flexibility as described above. Make sure

Reference numeral 34 denotes a power source, in which a normal battery is used, or a case in which home alternating current can be introduced by attaching an adapter.

An acoustic chip (not shown) constituting the control device 33, a tone button 33a, a vibration button 33b, a volume dial 33c, an on / off switch 33d, and the like are shown in FIG. It is a general and well-known electronic component which has the same function as the conventional scroll piano shown in the present invention, The present invention does not relate to these component parts itself to the last, but in consideration of the point which has the summary in a folding structure, Any further explanations are omitted.

In the folding piano of the present invention, however, the top surfaces of the tone button 33a, the vibration button 33b, the volume dial 33c, and the on / off switch 33d are on the same plane, so that the folding is performed. In the process, it is preferable that the keyboard part 40 does not press each writing component on the main body part 30.

In the above, the folding piano of the embodiment of the present invention has been described in detail with reference to the accompanying drawings, but those skilled in the art will be able to make various changes or modifications with reference to the above description, and the lower plate lower part constituting the keyboard part having a circuit board therein By joining a reinforcement plate on the surface or reinforcing the lower plate to have its own rigidity, and then connecting the main body portion including the control device and the speaker to the upper surface of the keyboard portion, it is possible to play on a soft floor surface such as grass. Of course, after the end of the performance it will be understood that it belongs to the technical scope of the present invention as long as it is a structure forming a neat folding form of a notebook computer shape.

As described above, according to the present invention, it is possible to obtain a folding piano which is not only portable but also playable regardless of the installation floor state, and which has a beautiful appearance after folding.

1 is a plan view showing a conventional scroll piano,

2 is a partial front sectional view showing the scroll piano;

3 is a plan view showing a folding piano of an embodiment of the present invention,

4 is a schematic electrical diagram of a folding piano of an embodiment of the present invention;

5 is a partial front sectional view showing a folding piano according to the first embodiment of the present invention;

6 is a rear view showing a folded form of the folding piano of the first embodiment;

Fig. 7 is a rear view showing another folded form of the folding piano of the first embodiment.

Explanation of symbols on the main parts of the drawings

          10, 30: main body 20, 40: keyboard

          21, 41: top plate 22, 42: circuit board

          23, 43: lower plate 41a: attachment plate

             44a: magnet 44b: folding groove

Claims (8)

The upper plate 41 with the keyboard engraved thereon, the lower plate 43 joined to the edge of the upper plate 41 to form a rectangular inner space therebetween, and the inner space between the upper plate 41 and the lower plate 43. A keyboard portion 40 including an inserted circuit board 42; A control device 33 which is connected to a connection end protruding on the upper side of the keyboard portion 40 and is electrically interconnected with the circuit board 42 drawn out through the connection end, and supplies power to the control device 33. And a main body portion (30) having a built-in power supply (34) and a speaker (32) for sounding the electrical signal from the control device (33). The upper plate 41 and the lower plate 43 are made of a flexible silicone rubber material, and the lower surface of the lower plate 43 is bonded to a reinforcing plate 44 as a synthetic resin material having its own rigidity. A folding piano characterized by the above. 2. The folding piano according to claim 1, wherein the upper plate (41) and the lower plate (43) are made of silicone rubber, and the upper plate (41) has flexibility while the lower plate (43) has its own rigidity. The folding piano according to claim 1, wherein the upper plate (41) is flexible as a silicone rubber material, while the lower plate (43) is a synthetic resin material having its own rigidity. 2. Folding piano according to claim 1, characterized in that the control device (33) comprises a tone button (33a), a vibration button (33b), a volume dial (33c) and an on / off switch (33d). The folding piano according to claim 2, wherein a folding groove (44b) is formed on a lower end surface of the reinforcing plate (44). The folding piano according to claim 3 or 4, wherein a folding groove is formed on a lower end surface of the lower plate (43). 6. A folding piano according to claim 5, wherein the top surfaces of the tone button (33a), the vibration button (33b), the volume dial (33c), and the on / off switch (33d) form the same plane.