JP3074085U - Folding keyboard portable piano - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a piano that can be used anywhere, by keeping the original performance of the piano almost, and by making it portable and foldable. SOLUTION: While borrowing and applying the necessary technology from the conventional electronic piano manufacturing technology, as a new invention, the number of keyboards is reduced and the weight of the material is reduced as long as the original tone, range and performance of the piano can be almost maintained. We will make it a "two-folded keyboard" that can be carried by anyone, and the keyboard can be folded and stored in a light case when carrying. This two-fold system allows for three-fold and four-fold, etc.
However, among them, the “half-fold keyboard” is the easiest to handle, so we will build it first as a standard.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention is in the field of electronic piano manufacturing, and includes not only making a "foldable keyboard" that can be carried by anyone, but also a device relating to a sound range setting and a sense of touching a key, etc., necessary to make a piano that maintains its original performance. The “touch feeling” is the feel of the keyboard that is necessary for the musical expression devising ability when playing a key with a finger, and is necessary for the performance of a piano.

[0002]

[Prior art]

 Until now, various types of electronic pianos have been manufactured, but from the point of view of the desire to carry, all of them have problems with weight and the size of the left and right width of the entire keyboard, and are not at a level that anyone can carry. . Some of the various keyboards released so far use electronic instruments to produce sounds that resemble actual pianos, but all of them are characterized by the fact that they also have the tone and performance of many other types of musical instruments other than pianos. There is no substitute for a piano in terms of sound quality and key touch feeling.

[0003]

[Problems to be solved by the invention]

 Because electronic pianos make sound using electronic devices, many of the equipment that accompanies ordinary pianos is omitted, and is generally much lighter than ordinary pianos. As an example, Yamaha's P80 (88 keys) released in the fall of 1999 weighs about 16 kg. However, there is still considerable variation to the point where anyone can carry it. Therefore, in the present invention, the visual weight of the piano is omitted and replaced with plastics such as iron plates, etc., so that it can be lightly weighed to around 5 kg, which can be carried by anyone, and at the same time, it is made easy to carry. However, performances such as the range, tone, and touch feeling of most piano songs can be maintained.

[0004]

[Means for Solving the Problems]

 The 88 keys of the piano keyboard are newly set to a range that can almost retain the performance of the piano, and are lightened by maximizing the reduction. In addition, a folding keyboard for portable use is housed in a small case. The bottom plate, etc., which uses an iron plate, is made lighter and harder with plastic to reduce the weight, and in order to maintain the original feel of the piano at the time of keying, wood is used for a part of the keyboard, and a front punching cloth is used. Use a new position to set the keyboard so that the force to sink the keyboard is about 50 grams, just like a normal piano. Other technologies already developed will be borrowed and applied. These include electronic technology, such as sensing the speed and strength of a piano's keystrokes with a sensor, and using a speaker to produce pre-sampled piano tones, and keyboard manufacturing technology.

[0005]

[Embodiment of the invention]

 In order to reduce the left and right width of the entire keyboard, a method of reducing the number of keyboards without changing the width of each key is used. From the left and right ends of a normal 88 piano keys, that is, 8 keys in order from the highest and lowest notes Reduce to 72 keys. Any number of keyboards can be created based on the 72 keys by this method. The grounds based on the 72 keys are as follows. 1) This range includes the range where the most popular piece of piano music can play the "passion" composed by Beethoven, and is the range where most piano songs can be played. 2) The width and weight of the entire keyboard are considerably reduced without changing the left and right center points of the keyboard of an ordinary piano, that is, with the middle point between the one-point sound and the one-point sound as the center point of the entire keyboard. The left and right center points of keyboards currently on sale are different.

[0006]

【Example】

 Foldable keyboards will be created for "Moter Piano" (trademark setting) and its designated product "Portable piano that can fold the keyboard in two, a musical instrument that produces electronic piano sounds." In order to reduce the weight of this electronic piano to around 5 kg, the keyboard is entirely made of plastic or the like. Weight at the back. The portable storage case is made of a thin, hard, light plastic plate, etc., so that it fits perfectly inside.

[0007]

[Effect of the invention]

 By making this electronic piano a half-fold keyboard with a weight of about 5 kg, anyone from children to the elderly can easily carry it anywhere. This piano can be played anywhere on the desk, etc., and even in a school classroom, each student can put it on the desk and practice together. Everybody can enjoy playing the piano anywhere they like for their health until retirement. When you don't play in a small house, the "folding keyboard" is convenient for storage. The above will make it easier for the general public to use the piano for lifelong learning, and will also help the intention of the Act on the Development of a Learning Environment for Promoting Music and Culture (Act No. 107 of 1994).

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a folding keyboard portable piano of the present invention.

FIG. 2 is a front view of a state where the piano is separated from the center to be folded.

FIG. 3 is a side view from the keyboard center side in a state where the piano is folded.

FIG. 4 is a side view of a piano case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Piano body 2 Music stand 3 Cover 4 Black key 5 White key 6 Center of keyboard 7 Music score stop 8 Weight 9 Cable 10 Balance key pin 11 Keyboard stop 12 Front punching cloth 13 Bottom plate 14 Wood 15 Speaker 16 Power cord 17 Sustain pedal cord 18 Case 19 Handle

Claims (1)

[Utility model registration claims] 1. The keyboard of an electronic piano that emits sound by using an electronic device is reduced to the extent that the original performance of the piano can be maintained, and the iron plate and the like are lightened by using light and hard plastics. A folding keyboard portable piano characterized by being folded and stored in a light case so that anyone can carry it.