JPH09134166A - Keyboard of keyboard musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heat the surface of a keyboard to an adequate temp. and to efficiently execute a lessen by forming the heating section of a heater to a film form and disposing this heating section between a keyboard body and a keyboard skin. SOLUTION: The heater 10 is composed of the heating section 7 and lead wires 6. The heating section 7 consists of a heater film 7a and a protective film 7b. This heater film 7a consists of a heating material, such as a material formed by winding and wiring a nichrome resistor therein, and is electrically connected to a power source circuit 9 in a piano body through the lead wires 6. The heating section 7 and the lead wires 6 are so formed as to be snugly housed into the recessed parts 5a and 5b of the keyboard body 5. The heater film 7a is heated by such connection. The surface of the film, i.e., the surface of the keyboard 2 is warmed by the generated heat via the protective film 7 and the keyboard skin 3 and eventually the adequate warmth is imparted on the player's fingers at the time of playing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard of a keyboard instrument such as a piano, accordion, organ, electronic musical instrument and keyboard.

[0002]

2. Description of the Related Art FIG. 6 shows, as an example of a conventional keyboard, a structure around a keyboard (one white key and one black key are shown) in the case of a piano. As shown in the figure, the keyboard 102 comprises a keyboard body 105 made of solid wood such as spruce, and a keyboard skin 3 (for white keys: 3a, for black keys: 3b) adhered to the upper surface thereof. . The keyboard skin 3a for white keys is made of acrylic resin, and the keyboard skin 3b for black keys is made of phenol resin. These materials are easily available and inexpensive,
In addition, since it has advantages such as no problems such as discoloration, wear, and peeling, it is generally used as a keyboard skin. The keyboard skin 3 constitutes a performance section in which the player directly touches the finger, and the keyboard 102 is capped by the movement of the lever around the balance pin 13 when the performance section is depressed. It is configured to perform a predetermined movement such as operating an action (not shown) via the stun button 17.

[0003]

However, in the case of the above-described keyboard, for example, in a lesson in the early morning of winter, the performer touches the surface of the keyboard that is cold due to the cold, I had to make painful thoughts, such as turning my fingers bright red because of the cold weather. In addition, the coldness of the fingers causes the performer not to concentrate on the lessons, and the lessons can be done efficiently, which is a factor that hinders the player's progress.

The present invention has been made in order to solve such problems, and the surface of the keyboard can be heated to the player's finger at a comfortable and appropriate temperature, so that the player can comfortably take lessons without difficulty. It is an object of the present invention to provide a keyboard for a keyboard musical instrument that allows lessons to be conducted efficiently by being able to concentrate.

[0005]

In order to achieve the above object, a keyboard of a keyboard musical instrument according to claim 1 of the present invention comprises a keyboard body, a keyboard skin joined to cover an upper surface of the keyboard body, and the keyboard. A heater for heating the skin is provided, and the heating portion of the heater is formed in a film shape, and is provided between the keyboard body and the keyboard skin.

In this keyboard, the surface of the keyboard skin, that is, the keyboard surface can be warmed by the heater. In this case, by warming the keyboard surface to a temperature that is comfortable for the performers' fingers, for example, in the case of the early winter morning lesson, the keyboard surface should be warmed in advance before the lesson time. This allows the performer to comfortably focus on the lesson. As a result, lessons can be performed efficiently, which in turn helps the player to improve. Further, in this keyboard, by providing the heating part of the heater between the keyboard skin and the keyboard body, the heating part is housed inside the keyboard,
The heating part can be protected strongly, and since the heating part is film-shaped, it can maintain the same thickness as the conventional keyboard, and as a result, can be configured without impairing the appearance as a keyboard. .

Further, in the keyboard according to the first aspect, it is preferable that at least one of the keyboard body and the keyboard skin is formed with a recess for accommodating the heating portion.

Since the heating portion of this keyboard is housed in the recess formed in at least one of the keyboard body and the keyboard skin, the keyboard can be constructed without impairing the appearance of the keyboard. At the same time, after accommodating the heating portion in the recess, the keyboard body and the keyboard skin are adhered to each other, which can be easily manufactured by a method similar to the conventional method.

Further, in the keyboard according to claim 1 or 2,
The heater is provided with a lead wire for supplying electric power to the heating section, and the lead wire is arranged inside the keyboard and externally from a portion of the keyboard housed in the keyboard instrument main body. It is preferably drawn out.

According to this keyboard, since the entire heater including the lead wire is provided inside, the keyboard surface can be warmed while keeping the same appearance as the conventional keyboard within the range visible to the performer. Further, since the lead wire is housed inside the keyboard, it is possible to protect the lead wire in strength and prevent disconnection or the like.

Further, in the keyboard according to any one of claims 1 to 3, a power supply circuit for supplying electric power to the heater is
It is preferably provided in the keyboard instrument body.

According to this keyboard, a power supply circuit for supplying electric power to the heater is provided in the keyboard instrument main body,
A keyboard instrument can be constructed without compromising its appearance.

Further, in the keyboard of claim 4, it is preferable that the power supply circuit has a set temperature varying means capable of changing a set temperature of the keyboard skin.

With this keyboard, the temperature of the keyboard surface can be set to an appropriate temperature that is comfortable for the finger of the player by the setting means, and the set temperature can be changed according to room temperature or preference.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A keyboard of a keyboard instrument according to an embodiment of the present invention will be described below with reference to the accompanying drawings. In addition, in the following description, unless otherwise specified, elements or parts given the same reference numerals have the same configurations and functions, and duplicate description will be omitted.

FIG. 1 shows the structure around a keyboard of a piano 1 to which the present invention is applied. The piano 1 is provided with a plurality of keyboards 2 (one white key and one black key are shown). Each keyboard 2 has a keyboard skin 3 (keyboard skin 3a for white keys and keyboard skin 3b for black keys), a keyboard body 5, and a heater 10 for heating the keyboard skin 3.

First, the keyboard 2 in the case of a white key is shown in FIG.
This will be described with reference to FIG. As shown in the figure, the keyboard body 5 is
For example, it is made of a plate material such as spruce, and recesses 5a and 5b for embedding the heating portion 7 of the heater 10 and the lead wire 6 are formed on the upper surface thereof. Here, for example, the thickness of the heating unit 7 is about 0.5 to 1.
In the case of 1 mm, the depth of the recess 5a or 5b is about 0.8-
It is formed to about 1.5 mm. The sprue that constitutes the keyboard body 5 is a light, tenacious and highly elastic wood, and can maintain sufficient strength even if the recesses 5a and 5b are formed. Further, the keyboard skin 3 is made of a synthetic resin such as acrylic resin, and is bonded to cover the upper surface of the keyboard body 5 like the conventional keyboard skin.

Further, the heater 10 is composed of the heating section 7 and the lead wire 6, and the heating section 7 is composed of a heater film 7a and a protective film 7b. Heater film 7a
Is made of a heat generating material such as a detour wiring of a nichrome resistor, and is electrically connected to the power supply circuit 9 in the main body of the piano 1 (on the right side from the plane AA in FIG. 1) through the lead wire 6. . The protective film 7b is made of, for example, a material such as silicon rubber so as to soften heat conduction from the heater film 7a to the keyboard skin 3 and protect the heater film 7a in a strong manner. Has been formed. Then, the heating unit 7 and the lead wire 6
Are to be housed exactly in the recesses 5a and 5b of the keyboard body 5.

Here, in the heating section 7 of the heater 10 and the power source circuit 9 in each keyboard 2, for example, as shown in FIG. 3, a power source 9a and a variable resistor (set temperature varying means) 9b are connected in series. The lead wires 6 are connected to each other in parallel at both ends of the circuit so that they are connected to each other. By connecting in this way, the heater film 7a generates heat, and the surface thereof, that is, the surface of the keyboard 2 is warmed by the heat through the protective film 7b and the keyboard skin 3, and as a result, the performer during the performance. The fingers are given a moderate amount of warmth. At this time, the temperature of the surface of the keyboard 2 is changed by the performer by changing the resistance value of the variable resistor 9b in the power supply circuit 9 according to the season, time zone, etc. at the time of performance, and the voltage value supplied to the heater 10 or By adjusting the current value or the like to a predetermined value, it is possible to set a predetermined temperature, for example, in the range of about 25 to 35 ° C.

As described above, in the keyboard 2 and the piano 1 to which the keyboard 2 is applied, the temperature of the surface of the keyboard 2 can be set to a temperature comfortable to the finger of the player by the heater 10 in the keyboard 2. As a result, for example, according to the conventional keyboard, the finger becomes bright red by touching the surface of the keyboard that is cold due to the cold, and even in the case of a lesson in the early morning of winter when the performer had a hard time, By warming and preserving the surface of the keyboard 2 before the lesson time, the performer can comfortably concentrate on the lesson without any trouble. As a result, lessons can be performed efficiently, which in turn helps the player to improve.

Further, in the above-mentioned case, since the heating part 7 is in the form of a film, the keyboard 2 can be constructed without affecting the thickness and strength of the keyboard 2, and the heating part 7 and the lead wire By housing 6 inside the keyboard 2, it is possible to protect the heating part 7 and the lead wire 6 in terms of strength, and prevent disconnection and the like. The heater 10 is provided in the keyboard 2 and the power supply circuit 9 is provided in the piano 1 main body.
The piano 1 can be constructed without impairing its appearance.

Since the acrylic resin shown as an example of the material of the keyboard skin 3 is widely used for lighting equipment and the like, it is also excellent in safety against heat. It can be applied to the above-mentioned keyboard 2 provided without any problem.

The heating section 7 of the heater 10 shown in FIG. 1 or 2 is provided at the tip of the keyboard 2, but the set area of the heating section 7 is extended to the rear of the keyboard skin 3. You may comprise so that the keyboard skin 3 whole may be warmed. Further, the heating portion 7 may be formed in the same shape as the lower surface of the keyboard skin 3 without forming the recesses 5a and 5b, and may be bonded between the keyboard skin 3 and the keyboard body 5. In these cases, the lead wire 6 may be pulled out from the end of the heating portion 7 in the main body of the piano 1 without being embedded in the recess 5b. Further, the lead wire 6 penetrates the keyboard 2 in the vicinity of the balance pin 13 and is drawn out to the lower side, and is connected to the power supply circuit 9 shown in FIG. 3 on the reed 16 or on the lower surface of the reed 16. Is also good. In addition, the power supply circuit 9
It is also possible to equip a part of the surface of the keyboard skin 3 with a temperature sensor and automatically control the current value and the like based on the difference between the surface temperature and the set temperature.

Furthermore, the recess 5a or 5b may be formed not on the upper surface of the keyboard body 5 but on the lower surface of the keyboard skin 3 to accommodate the heating portion 7 and the lead wire 6. By forming a recess in at least one of the keyboard body 5 and the keyboard skin 3, the heating unit 7 and the lead wire 6 are housed in the recess, and then the keyboard body 5 and the keyboard skin 3 are adhered to each other. Can be easily manufactured by the method.

Next, the keyboard 2 for a black key will be described. This black key is also configured basically in the same manner as the white key described above, that is, the surface of the keyboard 2 can be heated by the heater 10 composed of the heating section 8 and the lead wire 6, and the keyboard 2 of the keyboard 2 can be heated. The surface temperature can be set according to the season, time zone, etc. of the performance by adjusting the current value supplied to the heater 10.

Specifically, the black key keyboard skin 3b is made of a synthetic resin such as phenol resin and has the same advantages as the white key keyboard skin 3a made of acrylic resin, such as little discoloration and wear. There is. On the other hand, as is clear from FIG. 1, the keyboard skin 3b is thicker than the above-mentioned keyboard skin 3b, so the thickness of the keyboard skin 3b and the above materials are taken into consideration, that is, the surface of the keyboard skin 3b, that is, the surface of the keyboard 2. The heat generation amount from the heating unit 8 is set so that the set temperature range of 1 is the same as that of the white key. This amount of heat generation can be set by setting the area of the heater film 8a (not shown) in the heating unit 8 or the resistance value of the nichrome resistor inside the heater unit to a predetermined value. Therefore, the black key has the same effect as the white key.

The phenolic resin shown as an example of the material of the keyboard skin 3b has not only high strength and high dimensional stability, but also excellent electrical insulation and heat resistance. Heater 10 as well as resin
It can also be applied to the keyboard 2 equipped with. As the keyboard skin 3, other materials having the same characteristics as the acrylic resin or the phenol resin, such as having the above-mentioned discoloration and less wear and being safe against heat, may be used.

The present invention is not limited to the embodiment described above, but can be implemented in various modes.

For example, the present invention can be applied to a keyboard such as an organ whose whole keyboard is made of the above-mentioned synthetic resin. In this case, as shown in FIG. 4, the heating part 27 and the lead wire 26 are integrally formed with the keyboard 20, or, as shown in FIG. 5, at the root of the keyboard 30, that is, at a portion hidden in the keyboard instrument body. A method of joining the heating unit 37 and heating the keyboard 30 from the root can be adopted. Also in these cases, the heating part 27 or 37 of the heater is used.
Since it is provided in the keyboard or the keyboard instrument body, it can be configured without impairing the appearance of the keyboard.

In the case of the keyboard 30 described above, the heating portion 37 may be added to the surface of the existing keyboard of the type integrally molded including the keyboard surface by adding it later. Similarly, the heating section 3 is provided at a portion of the keyboard skin 3 of the keyboard 102 shown in FIG.
The keyboard of the present invention can also be configured by retrofitting a heating unit similar to that of 7.

In addition, the detailed configuration and the like can be changed as appropriate without departing from the spirit of the present invention.

[0032]

As described above in detail, according to the keyboard of the keyboard musical instrument of the present invention, the surface of the keyboard can be heated by the heater provided in the keyboard to the player's finger at a comfortable and appropriate temperature. As a result, the performer can concentrate on the lesson comfortably without any hindrance, so that the lesson can be efficiently performed.

[Brief description of the drawings]

FIG. 1 is a partial side sectional view showing an example of a configuration around a keyboard of a piano to which the present invention is applied.

FIG. 2 is a diagram showing an example of a configuration of a white key to which the present invention is applied.

FIG. 3 is a diagram showing an example of a connection between a heater in a keyboard and a power supply circuit in a piano body.

FIG. 4 is a perspective view showing another example of a keyboard to which the present invention is applied.

FIG. 5 is a view similar to FIG. 4, showing another example.

FIG. 6 is a perspective view showing an example of a conventional keyboard.

[Explanation of symbols]

 1 Piano (keyboard musical instrument) 2, 20, 30 ... keyboard 3 keyboard surface 3a white key keyboard surface 3b black key keyboard surface 5 keyboard body 6, 26, 36 ... heater lead wires 7, 27, 37 ‥‥‥ Heating unit for white key heater 8 Heating unit for black key heater 9 Power supply circuit 9a Power supply 9b Variable resistance (set temperature changing means) 10 Heater

Claims (5)

[Claims] 1. A keyboard main body, a keyboard skin that is joined to cover the upper surface of the keyboard main body, and a heater that heats the keyboard skin, wherein the heating portion of the heater is formed in a film shape, and A keyboard of a keyboard instrument, which is provided between the keyboard body and the keyboard skin. 2. The keyboard of the keyboard instrument according to claim 1, wherein a recess for accommodating the heating portion is formed in at least one of the keyboard body and the keyboard skin. 3. The keyboard, wherein the heater is provided with a lead wire for supplying electric power to the heating section, the lead wire being arranged inside the keyboard and being housed in a keyboard instrument main body. The keyboard of the keyboard musical instrument according to claim 1 or 2, wherein the keyboard is pulled out to the outside from the part. 4. The keyboard of a keyboard musical instrument according to claim 1, further comprising a power supply circuit for supplying electric power to the heater in the keyboard musical instrument body. 5. The keyboard of a keyboard instrument according to claim 4, wherein the power supply circuit has set temperature varying means capable of changing the set temperature of the keyboard skin.