JPH04178695A - Electronic castanets - Google Patents

Abstract

PURPOSE:To allow the production of the above castanets at a low cost by forming the castanets so as to have a 1st moving body and 2nd moving body which are connected via a fulcrum part and are turnably pressed to each other, providing a pressing part on the opposite surface of the 1st moving body and providing a switch part which is operated to turn on by contact with the pressing part and outputs a signal for instructing the characteristics of musical tones on the opposite surface of the 2nd moving body. CONSTITUTION:The 1st moving body 1 and the 2nd moving body 2 are elastically supported at one end thereof with a prescribed turning angle via a return spring 3. The pressing part 9 which projects toward the moving body 2 is formed in approximately the central part of the inner case 5 of the moving body 1. An aperture 18 is provided in approximately the central part of the inner case 15 of the moving body 2 and a speed detector sensor 20 is provided therein. The turning speeds of the moving bodies 1, 2 are detected by the time lag between a pair of fixed contacts 21, 22 provided therein. The sound volume or timbres meeting the turning speeds are radiated from a musical tone generator or head horn. The durability of the device is improved in this way and the cost is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION 1. Field of Industrial Application] The present invention relates to an electronic castanate that outputs an instruction signal for indicating musical tone characteristics by turning on a switch section.

“Prior art” As a conventional electronic castanet, Japanese Patent Application Laid-Open No. 62-969
The one disclosed in Publication No. 96 has been proposed. This electronic castanet consists of a first
It has a movable body and a second movable body, and the second movable body is equipped with a piston knob formed of a piezoelectric element. Then, when the first movable body and the second movable body are brought into contact with each other,
As a result, the mechanical vibration caused by the impact on the second movable body is detected by the pickup, and the second movable body converts the mechanical vibration into an electrical signal and outputs it.

Therefore, by generating a musical tone signal based on the electric signal output from the pickup and generating sound, musical tone can be generated in response to the impact.

:]Problem to be Solved by the Invention] [5However, in such conventional electronic castanets, piezoelectric elements are used as pickups for converting the mechanical vibrations into electrical signals, as described above. and
Since the piezoelectric element is expensive, the use of this expensive piezoelectric element contributes to an increase in the manufacturing cost of the electronic castanet. Moreover, in order for the piezoelectric element to convert mechanical vibration into an electrical signal of a predetermined level, it is necessary for either the piezoelectric element or the attached second movable body itself to vibrate due to the impact. The second movable body to which the piezoelectric element is mounted needs to be molded from an expensive material such as metal that has excellent vibration characteristics.

However, as mentioned above, not only is the piezoelectric element itself expensive, but also the 261st moving body must be made of an expensive material with excellent vibration characteristics. This has the disadvantage of increasing manufacturing costs.

In addition, piezoelectric elements are susceptible to changes over time (1) because they are susceptible to deterioration, making it impossible to obtain an electrical signal at a predetermined level for a long period of time, and resulting in the inability to obtain the desired musical tone at an early stage. It also had the above disadvantages.

The present invention has been made in view of such conventional problems, and an object of the present invention is to provide an electronic castanet that can be manufactured at low cost and has excellent durability.

[Means for Solving the Problems: In order to solve the above problems, the present invention provides a first rotatable member connected via a rotation fulcrum portion and rotatable in a direction in which mutually opposing surfaces are brought into contact with each other. a movable body and a second movable body;
The device is turned on by contact between the pressing portion provided on the oppositely facing surfaces of the movable body and the pressing portion provided on the oppositely facing surface of the second movable body, and outputs an instruction signal for indicating musical tone characteristics. and a switch section for outputting the output.

Further, the switch section is composed of two switch elements that are turned on sequentially with a time difference according to the rotational speed of both the movable bodies, and the switch element is configured to turn on the first movable body or the second movable body by an external operation. It is preferable that a timbre changeover switch is provided that outputs an instruction signal for changing the timbre.

Furthermore, preferably, both the first and second movable bodies and the rotation fulcrum are integrally molded, and either one of the movable bodies is engaged with the other movable body so that both cases are engaged with each other. Locking means are provided to maintain a predetermined rotation angle.

[Function] In the above configuration, when either one of the cases is struck and rotated in a direction in which the opposing surfaces are brought into contact with each other, the pressing portion provided on the first movable body is pressed against the pressing portion provided on the second movable body. The switch comes into contact with the turned-on switch section, and the switch section is turned on. As a result, the switch unit outputs an instruction signal for instructing musical tone characteristics, and by instructing the characteristics of the musical tone, such as volume and timbre, in response to the instruction signal, desired characteristics can be obtained in synchronization with the beating. A musical sound is generated.

Furthermore, the switch section is constituted by two switch elements that are turned on sequentially with a time difference corresponding to the rotational speed of both movable bodies, so that the relative rotational speed of both movable bodies can be detected based on the time difference. This makes it possible to control the characteristics of the musical sound to be generated, such as the volume and timbre, in accordance with the relative rotational speed.

Furthermore, by providing the tone color changeover switch on the first movable body or the second movable body, it becomes easy to externally operate the tone color changeover switch while playing the castanets, and it becomes possible to quickly change the tone color during playback.

In addition, by integrally molding both movable bodies, the rotation fulcrum part, and the locking means for maintaining both movable bodies at a predetermined rotation angle, electronic castanets can be manufactured using inexpensive synthetic resin and a simple molding process. It becomes possible to manufacture

[Example] An example of the present invention will be described below with reference to the drawings. That is, as shown in FIG. 1, the first movable body 1 and the second movable body 2 are connected at one end via a return spring 3.
As shown, it has a spring force capable of resiliently supporting both cases 1 and 2 at a predetermined rotation angle, and forms a rotation fulcrum.

The first movable body 1 is composed of an outer case 4 forming an outer circumferential surface and an inner case 5 facing the second movable body 2. The inner circumferential surface of the outer case 4 has a pair of outer Boss parts 6, 6 and an inner boss part 7.7, which is shorter than the outer boss part 6.6, are provided in a protruding manner. The inner case 5 is fixed to the tip of the outer boss portion 6.6 by a screw 8.8, and the second movable body 2 is fixed to the center of the inner case 5.
A pressing portion 9 protruding toward the housing is integrally molded. Further, a screw 10. is attached to the tip of the inner boss portion 7.7.
A printed circuit board 11 is fixed by 10, and the printed circuit board 11 is provided with a tone color switching circuit (not shown). The tone color switching circuit is a circuit that outputs an instruction signal for changing the tone color by externally operating the tone color changeover switch 12. exposed to the outside.

On the other hand, the second movable body 2 also has an outer case 14 forming an outer peripheral surface and an inner case 15 facing the first movable body 1.
A pair of boss portions 16 and 16 are provided on the inner circumferential surface of the outer case 14 in a protruding manner. The inner case 15 is fixed to the tip of the boss portion S, 16 by screws 17, 1.7, and an opening 18 is provided approximately at the center of the inner case 15. The boss portion 1
At 6°16, there is a printed circuit board 1 along with the inner case 15.
9 is fixed, and a speed detection sensor 20 received in the opening 18 is provided on the printed circuit board 19.

The speed detection sensor 20 is provided with a pair of mutually insulated comb-like first fixed contacts 21 and a pair of second fixed contacts 22 which are provided on the printed circuit board 19 and are arranged in parallel. Further, the speed detection sensor 20 is provided with a housing 23 made of a com, which is supported on the printed circuit board 19 and protrudes toward the pressing portion 9 through the opening 18 . On the inside of the housing 23, a long protrusion 24 located above the first fixed contact 21 and a short protrusion 24 located above the second fixed contact 22 and shorter than the elongated protrusion 24 are provided. A first movable contact 26 is fixed to the lower end surface of the long protrusion 24, and a second movable contact 27 is fixed to the lower end surface of the short protrusion 25. ing.

Further, a pressure receiving portion 28 is provided protruding from the outside of the housing 23, and the pressure receiving portion 28 faces the pressing portion 9.

On the other hand, one end of an output cord 29 is connected to each of the printed circuit boards 11, 19, and a jack 30 is connected to the other end of the output cord 29. The jack 30 is plugged and connected to an external input terminal section 32 provided on the top surface of the musical tone generator 31 shown in FIG.
Headphones 33 are inserted and connected to the upper surface, and a volume 35 is also provided. The musical tone generating device 31 has a built-in sound source (not shown), and is provided with a speaker section 34 and a liquid crystal display section 36 on the front surface, and the liquid crystal display section 36 has a built-in sound source (not shown). By operating the selector switch 12, the tone specified by [Has drum 3, etc.] is displayed.

Note that the headphones 33 are detachable, and when the headphones 33 are removed, sound is emitted from the speaker section 34, and when the headphones 33 are inserted and connected, the speaker section 34 stops and sound is emitted only from the headphones 33. A sound is being made.

In this embodiment having the above configuration, when using the electronic caster, the volume 35 is operated to set the volume, and the tone changeover switch 12 is operated to select a desired tone. Then, a tone color switching instruction signal is input to the musical tone generating device 31 via the output cord 29, and is displayed on the liquid crystal display section 36 of the musical tone generating device 31.
Displays the tone selected by operating the tone color changeover switch 12, for example, "bass drum."

In this state, if you hit the outer case 4 of the first movable body 1,
The pressing portion 9 comes into contact with the pressure receiving portion 28, and the housing 23 is deflected and deformed inward. As a result, first the long protrusion 2
The first movable contact 16 provided at the tip of 4 is a comb-shaped first
Abuts on the fixed contact 21, and the Wi straight toothed first fixed contact 21
becomes conductive and turns on. When the pressing part 9 continues to be in pressure contact with the pressure receiving part 28, the housing 23 is further bent and deformed inward, and the second movable contact 27 provided at the tip of the short protrusion 25 becomes a comb-like second fixed contact. 22, and as a result, the comb-shaped second fixed contact 22 also becomes conductive and turned on.

At this time, the time difference between when the first fixed contact 21 is turned on and when the second fixed contact 22 is turned on is equal to
1 determined by the relative co-movement speed of the movable body 1 and the second movable body 2. In other words, if both bodies 1 and 2 rotate relatively at high speed, the first fixed contact 21 turns on. Then the second
The time difference until the fixed contact 22 turns on becomes smaller,
In addition, if the relative rotation of both movable bodies 1 and 2 is deviated at low speed, the first fixed contact ", 1S21 is turned on, and then the second identification contact 2
The time difference until 2 is turned on becomes large. Therefore, the rotational speed of both movable bodies 1 and 20 can be detected based on this time difference, and this rotational speed is determined by the strength of the blow to the first movable body 1. Therefore, if the sound generation timing is set at the time when the second fixed contact 22 is turned on in the musical tone generating device 31, and the sound is generated at a volume and tone depending on the rotation speed, the first movable body 1 A bass drum sound having a volume corresponding to the strength of the blow is emitted from the sukka section 34 of the musical sound generating device 31 or the headphones 33.

That is, in this electronic castanet, the speed detection sensor ±20 that detects a blow and the strength of the blow must have a simple switch function that is normally open and turns on when the pressing portion 9 comes into contact with it. The good news is that it is not expensive, and even though it has a simple configuration, it is possible to generate musical tones at a volume that corresponds to the amount of blows.

Furthermore, since the structure is such that the sound is generated by turning on the pair of fixed contacts 21 and 22 provided on the speed detection sensor 20, the first movable Body l and second movable body 2
There is no need to mold the material using a material particularly excellent in vibration characteristics.

Therefore, both the movable bodies 1 and 2 can be molded from inexpensive materials such as synthetic resin, and together with the use of the aforementioned inexpensive speed detection sensor 20, manufacturing costs can be significantly reduced. . Furthermore, since the piezoelectric element, which has poor durability, is no longer required, and the speed detection sensor 20 with a simple configuration that performs only on/off operations can be used, it is possible to improve the durability of the electronic castanet. .

During the performance of the electronic castanet, if the tone selection switch 12 is operated, the tone change from the lotus drum to another set tone, such as Hi-Ha!・It is possible to switch to . At this time, since the tone color changeover switch 12 is disposed on the first movable body 1, it is possible to quickly change the tone color according to the music being played.
This allows for a wide variety of performances.

FIG. 3 shows another embodiment of the present invention, and shows the first embodiment.
The outer case 4 of the movable body 1 and the outer case 14 of the second movable body 2 are integrally molded with resin via a hinge 37, and a locking hole 3 is provided in a portion of the outer case 4 adjacent to the hinge 37.
8 is formed.

Further, a rod 39 is protruded from a portion of the outer case 14 facing the locking hole 3B, and a hook 40 is provided at the tip of the rod 39.

In such a configuration, as shown in FIG. 4, the hinge 37 is bent to rotate the first movable body 1 and the second movable body 2 in the direction in which the side inner cases 5 and 15 approach each other, and then The hook 4o is locked in the locking hole 38. Then,
Both moving bodies 1 and 2 are held at a predetermined angle against the restoring force of the hinge 37. Therefore, when the outer case 4 of the first movable body 1 is struck, the hinge 37 becomes a pivot point and both movable bodies 1 and 2 rotate relative to each other, as in the first embodiment described above. The pressing portion 9 comes into contact with the pressure receiving portion 28 to generate sound.

Therefore, in this second embodiment, the locking hole 38
an outer case 4 having a hinge 37 and a mouth;

Since it is possible to integrally mold the outer case 14 and the like having the hook 39 and the hook 40 with resin, it becomes possible to manufacture electronic castanets using inexpensive synthetic resin and a simple molding process. This makes it possible to reduce the cost of electronic power steering.

In the above-mentioned embodiment, the switch section 20 is composed of two sets of switch elements (26, 27, 21, 22), and is capable of controlling the timbre, etc. of the generated musical tone. It is also possible to simply determine the generation timing of the generated musical tone.

Effects of the Invention = As described above, in the electronic castanet according to the present invention, by bringing the pressing part provided on the first movable body into contact with the switch part provided on the second movable body, , the configuration is such that an instruction signal for indicating musical tone characteristics is output. Therefore, the need to use an expensive piezoelectric element is eliminated, and the need to mold the first movable body and the second movable body using a material particularly excellent in vibration characteristics is also eliminated, and as a result, the electronic caster , the production cost can be reduced.

In addition, piezoelectric elements, which have poor durability, are no longer necessary, and a switch section with a simple configuration that only performs on/off operations can be used, making it possible to improve the durability of electronic casters. Become.

Further, since the switch section is composed of two switch elements that are turned on sequentially with a time difference corresponding to the rotational speed of both the movable bodies, the strength of the blow is detected based on the time difference, and the generated musical sound is detected. The volume and timbre of the punch can be controlled, and since it has a simple configuration, it is possible to generate a musical tone with a volume and timbre that corresponds to the beating.

Furthermore, since the first movable body or the second movable body is provided with a tone change switch that outputs an instruction signal for changing the tone by an external operation, this enables quick change of tone depending on the music to be played. This allows for a wide variety of performances.

In addition, both the first and second movable bodies and the rotation fulcrum are integrally molded, and either one of the movable bodies is engaged with the other movable body to hold both movable bodies in a predetermined position. Since the locking means for maintaining the rotation angle at the rotation angle is provided, both the movable bodies and the rotation fulcrum part can be integrally molded with resin.

Therefore, it is possible to manufacture electronic castanets using a simple molding process using inexpensive synthetic resin, and this allows for -
It becomes possible to reduce the cost of the layered electronic power supply.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing an electronic castanet according to a first embodiment of the present invention; FIG. 2 is a perspective view of the electronic castanet of the same embodiment connected to a musical tone generator; The figure is a vertical cross-sectional view of an electronic castanet according to a second embodiment of the present invention in an unfolded state, and FIG. 4 is a vertical cross-sectional view of a state in which a hook of the same embodiment is engaged with a locking hole. . DESCRIPTION OF SYMBOLS 1... 1st movable body, 2... 2nd movable body, 9... Pressing part, 12... Tone change switch, 20... Speed detection sensor, 21... 1st fixed contact, 22... Second fixed contact, 26... First movable contact, 27... Second movable contact, 31... Musical sound generator, 37... Hinge, 3
8...Latching hole, 40...Hook. Patent applicant Casio Computer Co., Ltd.

Claims (4)

[Claims] (1) A first movable body and a second movable body that are connected via a rotation fulcrum and are rotatable in a direction in which mutually opposing surfaces are brought into contact; and the opposing surfaces of the first movable body. a pressing section provided on the second movable body, and a switch section provided on the opposing surfaces of the second movable body that is turned on by contact with the pressing section and outputs an instruction signal for indicating musical tone characteristics. An electronic castanet characterized by: (2) The electronic castanet according to claim 1, wherein the switch section includes two switch elements that are turned on sequentially with a time difference depending on the relative rotation speed of both the movable bodies. (3) The electronic castanet according to claim 1, wherein the first movable body or the second movable body is provided with a tone color changeover switch that outputs a tone color change instruction signal in response to an external operation. (4) Both the first and second movable bodies and the rotation fulcrum are integrally molded, and one of the movable bodies is engaged with the other movable body to hold both movable bodies in a predetermined position. Claim 1 characterized in that a locking means is provided for maintaining the rotation angle at a rotation angle of
, 2 or 3.