JPH0664462B2 - Electronic Harmonica - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electronic harmonica, and more particularly to an improvement in a technique for detecting expiration or inspiration for each playing hole.

SUMMARY OF THE INVENTION According to the present invention, a breath pressure switch plate is provided in common for a performance hole to be blown and a performance hole to be sucked, and the breath pressure or the inspiration of the performance hole corresponding to each breath pressure switch of the breath pressure switch plate is provided. An electronic harmonica having a simple structure is realized by detecting and generating a tone signal corresponding to the playing hole.

[Prior Art] Conventionally, as an electronic harmonica, first and second breath pressure switch groups are provided on one side and the other side of a performance hole array, and each breath pressure switch in the first breath pressure switch group is provided. To generate a tone signal corresponding to the playing hole by detecting the expiration of the playing hole to be blown, and inspiring the playing hole corresponding to each breath pressure switch in the second breath pressure switch group. Is known to generate a tone signal corresponding to the performance hole (for example, see Japanese Patent Laid-Open No. 60-138598).

[Problems to be Solved by the Invention] According to the above-described conventional technique, the first and second breath pressure switch groups can be formed in a sheet shape, and the breath pressure switches belonging to each breath pressure switch group are similar to each other. It can be configured, which is convenient in design and production.

However, two breath pressure switch groups are required, one for exhalation detection and the other for inspiration detection, and the breath pressure switch for exhalation detection and the breath pressure switch for inhalation detection have different configurations. So, as a harmonica composition,
Simplification of the structure is not always sufficient, and further improvement is desired.

[Means for Solving Problems] An object of the present invention is to sufficiently simplify the configuration of a detection unit that detects exhalation and inspiration for each performance hole in an electronic harmonica.

In the electronic harmonica according to the present invention, the breath pressure switch plate having the first and second breath pressure switches is provided commonly to the first playing hole to be blown and the second playing hole to be sucked, and the first breath pressure switch is provided. To detect the expiration of the first performance hole to generate a tone signal corresponding to the first performance hole, and to detect the inhalation of the second performance hole by the second breath pressure switch to detect the second performance hole.
It is characterized in that a musical tone signal corresponding to the performance hole is generated.

[Operation] According to the configuration of the present invention, since one breath pressure switch plate is used to detect expiration and inspiration, the configuration is very simple.

As one configuration example of the breath pressure switch plate, a spacer having first and second holes, a flexible film fixed to one surface side of the spacer by covering the first and second holes, and first and second The first and second contact groups respectively arranged corresponding to the two holes are provided, and the first and second breath pressure switches are formed corresponding to the first and second holes. Good.

In this case, the first and second breath pressure switches respectively bend the portions of the flexible film corresponding to the first and second holes according to the breath pressure.
The contact groups of are switched, and the expiratory pressure when the first performance hole is blown is applied to the first breath pressure switch from one side of the breath pressure switch plate, and the second breath pressure switch is applied to the second breath pressure switch. As a result, the intake pressure when the second performance hole is sucked is applied from the other surface side of the breath pressure switch plate.

With this configuration, in the first breath pressure switch, a part of the flexible film bends in the switch-on direction in accordance with the expiratory pressure, and in the second breath pressure switch, a part of the flexible film switches on in response to the inspiratory pressure. The first and second breath pressure switches can be configured to be substantially the same as each other.

Another example of the structure of the breath pressure switch plate is a spacer having first and second holes and a spacer fixed to one surface side of the spacer by covering the first and second holes and communicating with the second hole. The first flexible film having the vent holes, the first and second contact groups respectively arranged in the first and second holes, and the first and second holes on the other surface side of the spacer. A second flexible film having a vent hole that is fixedly attached and communicates with the first hole, and forms the first and second breath pressure switches corresponding to the first and second holes, respectively. You may

In this case, the first breath pressure switch is configured to switch the first contact group by bending the portion of the first flexible film corresponding to the first hole according to the breath pressure, and the second breath pressure switch. The pressure switch is configured to switch the second contact group by bending a portion of the second flexible film corresponding to the second hole. Then, the expiratory pressure when the first performance hole is blown is given to the first breath pressure switch from one side of the breath pressure switch plate, and the second performance hole is given to the second breath pressure switch. The inspiratory pressure when inhaling is given from the one surface side of the breath pressure switch plate.

With this configuration, in the first breath pressure switch, a part of the first flexible film bends in the switch-on direction, for example, according to the expiratory pressure, and the second breath pressure switch has the second flex pressure switch.
Part of the flexible film is bent in the switch-on direction according to the inspiratory pressure, and the first and second breath pressure switches have substantially the same configuration except that the positions of the vent holes are different. it can.

[Embodiment] First Embodiment FIG. 1 shows an electronic harmonica according to a first embodiment of the present invention.

The playing hole forming member 30 has playing holes 30a to 30h corresponding to the eight note names C, D ... C ', respectively.
For example, the playing hole 30a corresponding to the note name C is blown, and the playing hole 30b corresponding to the note name D is sucked.

A ventilation hole forming member 32 as shown in FIG. 2 is attached to the rear portion of the playing hole forming member 30. The ventilation hole forming member 32 has intake holes 32a, 32c, 32e, 32h corresponding to the performance holes 30a, 30c, 30e, 30h to be blown, and corresponds to the performance holes 30b, 30d, 30f, 30g to be sucked, respectively. Intake holes 32b, 3
It has 2d, 32f and 32g.

On the rear surface of the ventilation hole forming member 32, a stack of the inspiration passage forming member 34, the breath pressure switch plate 36 and the expiration passage forming member 38 is attached. The intake passage forming member 34, when combined with the breath pressure switch plate 36, forms an intake passage that communicates with the intake holes 32b, 32d, 32f, and 32g. In FIG. 7, the intake passage forming member 34 communicates with the intake hole 32b. The intake passage 34A is shown as an example.
Further, the expiratory-path forming member 38 forms an expiratory path communicating with the inhalation holes 32a, 32c, 32e, and 32h by being combined with the breath pressure switch plate 36, and the expiratory path 32a is shown in FIG. An exhalation passage 38A communicating with the above is illustrated.

In addition to the above-described intake passage, the intake passage forming member 34 also forms air chambers respectively corresponding to the performance holes 30a, 30c, 30e, 30h to be blown. These air chambers are not shown in FIG. In the breath hole forming member 32, the portions below the expiratory holes 32a, 32c, 32e, 32h are blocked so as not to communicate with the corresponding playing holes 30a, 30c, 30e, 30h. FIG. 6 exemplifies an air chamber 34B that is blocked by a portion below the expiratory hole 32a. In addition, the expiratory passage forming member 38
In addition to the above-mentioned expiratory passage, the performance holes 30b, 30d to be sucked,
Although air chambers corresponding to 30f and 30g are also formed, these air chambers are blocked at the portions above the intake holes 32b, 32d, 32f and 32g in the ventilation hole forming member 32 of FIG. The corresponding playing holes 30b, 30d, 30
It does not communicate with f and 30g. FIG. 7 illustrates an air chamber 38B that is blocked by a portion above the intake hole 32b.

The breath pressure switch plate 36, as shown in FIG.
A spacer 36B and a flexible film 36C are laminated.

At least the upper surface of the substrate 36A has an insulating property,
On the upper surface, eight contact points Pa are arranged in parallel corresponding to the playing holes 30a to 30h, and eight conductive layers La connected to the respective contact points Pa are formed so as to extend to the end surface of the substrate. Further, on the substrate 36A, a vent hole Na is provided in the vicinity of each contact Pa.

The spacer 36B has an insulating property, and when the spacer 36B is superposed on the substrate 36A, eight pairs of contact points / vent holes P in the substrate 36A are provided.
Eight holes Q are provided to expose a and Na respectively. The sizes of these holes Q are almost the same.

The flexible film 36C is made of, for example, a polyester film, and on its lower surface, eight contact points Pc are provided at positions corresponding to the above-mentioned contact points Pa, respectively, and eight conductive layers Lc connected to the respective contact points Pc are formed into a film. It is formed so as to extend to the end face.

A breath pressure switch plate 36 including eight breath pressure switches corresponding to the pitch names C, D ... C'is formed by stacking the substrate 36A, the spacer 36B and the flexible film 36C having the above-mentioned configuration and appropriately fixing them. It

A breath pressure detecting section 42 is provided via a ventilation hole forming member 40 at the rear part of the stack of the intake path forming member 34, the breath pressure switch plate 36 and the expiratory path forming member 38.

The breath pressure detecting section 42, as shown in FIG.
An air chamber forming member 44 that forms an air chamber together with 40, and a breath pressure detection plate 46 that is arranged in the air chamber so as to divide the formed air chamber into upper and lower parts corresponding to the upper and lower sections by the breath pressure switch plate 36. Is included.

The ventilation hole forming member 40 has ventilation holes corresponding to the performance holes 30a to 30h in a portion corresponding to above the breath pressure detecting plate 46.
M11, M12 ... Are provided, and ventilation holes M21, M22 ... Corresponding to the performance holes 30a to 30h are provided in a portion corresponding to the lower side of the breath pressure detection plate 46. Each vent hole such as M11 and M12 communicates with a corresponding expiratory chamber or air chamber formed by the expiratory passage forming member 38. For example, M11 communicates with the expiratory passage 38A as shown in FIG. Communicates with the air chamber 38B as shown in FIG. Further, each vent hole such as M21 and M22 communicates with a corresponding expiratory passage or an air chamber formed by the expiratory passage forming member 34. For example, M21 communicates with an air chamber 34B as shown in FIG. , M22 communicates with the expiratory passage 34A as shown in FIG.

The vent hole forming member 40 is preferably provided with a valve for each vent hole to assist the breath pressure detection plate 46 in detecting the breath pressure. That is, as illustrated in FIG. 5 for the vent holes M11 and M21, a valve V1 that responds to the exhaled breath is provided in each vent hole such as M11 above the breath pressure detection plate 46, and M21 below the breath pressure detection plate 46. A valve V2 that responds to exhalation can be provided in each vent hole such as.

With such a valve arrangement, for example, when the performance hole 30a corresponding to the ventilation hole M11 is blown, the valve V1 of the ventilation hole M11 opens in response to the exhalation at that time. At this time, the valves of the other vent holes such as M12 are still closed, and the exhalation inflow into the expiratory passage and the air chamber communicating with these vent holes is blocked. Also, vent M2
When sucking the performance hole 30b corresponding to 2, the valve (corresponding to V2) of the ventilation hole M22 opens in response to the intake at that time. At this time, the valves of the other vent holes such as M21 remain closed, and the inflow of intake air from the intake passage and the air chamber communicating with these vent holes is blocked. Therefore, the accuracy of breath pressure detection by the breath pressure detection plate 46 is improved by the amount that the excess inflow of inspiration and inflow of inspiration are blocked.

When the valve arrangement as described above is adopted, as shown in FIG. 6, a vent hole 34b is provided for each air chamber 34B formed by the intake passage forming member 34, and as shown in FIG. As described above, each air chamber 38B formed by the expiratory passage forming member 38
A ventilation hole 38b is provided for each.

As shown in FIG. 4, an exhalation outflow hole 44a and an inhalation inflow hole 44b are provided at one end of the air chamber forming member 44.

Next, with reference to FIGS. 6 and 7, the operation of the breath pressure switch on the breath pressure switch plate 36 by exhalation and inspiration will be described.

FIG. 6 shows a breath pressure switch corresponding to the playing hole 30a. Expiratory air is supplied from the playing hole 30a to the expiratory passage 38A communicating with the expiratory hole 32a. At this time, flexible film
At 36C, the portion corresponding to the hole Q bends downward depending on the expiratory pressure. Then, when the expiratory pressure reaches a predetermined strength, the contact point Pc comes into contact with the contact point Pa and is turned on. In addition,
When the vent hole M21 is provided with the valve V2 as described above, the vent hole 34b communicates with the atmosphere instead of M21.

FIG. 7 shows a breath pressure switch corresponding to the performance hole 30b, and intake air is supplied to the intake passage 34A communicating with the intake hole 32b as the performance hole 30b is sucked. At this time, the air in the holes Q is also sucked through the ventilation holes Na, so that in the flexible film 36C, the portion corresponding to the holes Q bends downward according to the intake pressure. Then, when the intake pressure reaches a predetermined strength, the contact point Pc comes into contact with the contact point Pa and is turned on. When the vent hole M12 is provided with a valve (corresponding to V1) as described above, the vent hole 38b communicates with the atmosphere in place of M12.

Therefore, from the breath pressure switch plate 36, each playing hole (each note name)
By blowing or inhaling each time, the ON signal of the corresponding breath pressure switch is obtained, and the tone signal of the corresponding pitch is generated in response to this ON signal. Thus, the 8-bit digital output from the breath pressure switch board 36 is used to determine the timing and pitch of musical tone generation. In this case, if necessary, the digital output from the breath pressure switch plate 36 can be converted into an appropriate code for use.

FIG. 8 shows an example of the structure of the breath pressure detecting plate 46. The breath pressure detecting plate 46 is formed by laminating a substrate 46A, a spacer 46B and a flexible film 46C.

At least the upper surface of the substrate 46A has an insulating property,
On the upper surface, as an example, five contacts P21 to P25 are juxtaposed at appropriate intervals and conductive layers L1 to L5 connected to the contacts P21 to P25 are formed to extend to the end surface of the substrate. There is. Further, the substrate 46A is provided with vent holes N1 to N5 near the contacts P21 to P25, respectively.

The spacer 46B has an insulating property, and when the spacer 46B is superposed on the board 46A, the five pairs of contact points / vent holes P in the board 46A are provided.
Five holes Q1, Q2, Q3, Q4 and Q5 are provided to expose 21 / N1, P22 / N2, P23 / N3, P24 / N4 and P25 / N5 respectively. The opening areas of these holes Q1 to Q5 are different from each other, and gradually decrease from Q1 to Q5. It should be noted that the vent holes N1 to N5 are not always necessary if the air passage can be secured between the spacer 46B and the substrate 46A when the spacer 46B is overlaid.

The flexible film 46C is made of, for example, a polyester film, and has five contacts P11 to P on its lower surface.
15 is provided at a position facing the above-mentioned contacts P21 to P25, respectively, and the conductive layer CL commonly connected to the contacts P11 to P15.
Are formed so as to extend to the end surface of the film.

A breath pressure detection plate 46 including five breath pressure switches corresponding to the holes Q1 to Q5 is formed by stacking the substrate 46A, the spacer 46B, and the flexible film 46C having the above-described configuration as shown in the figure and appropriately fixing them. To be done.

FIG. 9 shows a breath pressure switch corresponding to the holes Q1 and Q2 as a representative of the cross section of the switch portion of the breath pressure detecting plate 46 thus configured.

When breath pressure P does not act, paired contacts P11, P21, P1
All of 2 and P22 are separated from each other and off.

When the breath pressure P acts, the portions of the flexible film 46C corresponding to the holes Q1, Q2 ... Degree downward in response to the force proportional to the opening area of the holes corresponding to the breath pressure P. The amount of deflection at this time is larger as the opening area of the hole is larger if the breath pressure P is constant. Therefore, breath pressure P
As you raise, paired contacts P11 / P21, P12 / P22
, Are sequentially brought into contact with each other in this order to be turned on.

Now, assuming that the ON state is “1” and the OFF state is “0” for each contact pair, the breath pressure detecting plate 46 turns on / off the five breath pressure switches according to the strength of the breath pressure. Depending on the combination of states, it is possible to take out a digital output indicating a numerical change such as "00000" to "11111". In this case, "00000"
Corresponds to the state with the weakest breath pressure, and "11111" corresponds to the state with the strongest breath pressure.

When such a breath pressure detecting plate 46 is used in the breath pressure detecting unit 42 as shown in FIG. 4, not only a digital output according to the strength of the expiratory pressure but also a digital output according to the strength of the inspiratory pressure. Can also be taken out. That is, for example, a vent
When the exhaled air is supplied from M11 to the air chamber portion above the breath pressure detecting plate 46, the breath pressure detecting plate 46 responds to the strength of the expiratory pressure at this time in the same manner as described above with reference to FIG. The digital output can be taken out. Also, for example, vent holes
When the intake air is supplied to the air chamber portion below the breath pressure detection plate 46 as it is inhaled from the M22,
Since air is inhaled from the vent holes corresponding to N1, N2 ... In the figure, a plurality of breath pressure switches are turned on / off according to the strength of the inspiratory pressure in the same manner as in the case of the expiratory pressure. Therefore, a digital output corresponding to the strength of the inspiratory pressure can be taken out from the breath pressure detecting plate 46.

In this way, the digital output extracted from the breath pressure detection plate 46 according to the strength of the expiratory pressure or the inspiratory pressure is used, for example, to control the volume of the performance sound. It can also be used for. In this case, the breath pressure detection plate
If necessary, the digital output from 46 may be converted into a 3-bit coded digital signal for use.

In the above-described first embodiment, since a plurality of breath pressure switches formed in one breath pressure switch plate with the same configuration are used separately for exhalation detection and inspiration detection, they are used for exhalation detection. There is a merit that the structure of the harmonica is simple compared to the case where a breath pressure switch having a different structure for detecting inspiration is provided.

Further, since the breath pressure detecting section 42 is provided in common for a large number of playing holes, there is also an advantage that the structure can be simplified as compared with the case where an independent breath pressure detecting section is provided for each playing hole. In addition, the breath pressure detection unit 42
In the above, since the expiratory pressure and the inspiratory pressure can be detected by the single breath pressure detecting plate 46, the effect of simplifying the configuration is further great.

In the first embodiment, a breath pressure detecting plate similar to the breath pressure detecting plate 46 of FIG. 8 is provided for each playing hole (each note name), and based on the digital output from this breath pressure detecting plate. You may make it generate | occur | produce a musical tone of a corresponding pitch, and control the volume etc. of this musical tone. In this case, the breath pressure detector
42 can be omitted.

Second Embodiment FIG. 10 shows an electronic harmonica according to a second embodiment of the present invention.

The playing hole forming member 50 forms nine playing holes 50A together with the breath pressure switch plate 52, and 8 of these playing holes 50A are included.
The pieces correspond to the pitch names C, D ... C ', respectively.

At the bottom of the combination of the playing hole forming member 50 and the breath pressure switch plate 52, there is a breath pressure detecting portion including an air chamber forming member 56 and the like.
54 is provided.

FIG. 11 shows the performance hole forming portion in a disassembled state.
Nine vent holes 50a are provided in the rear part of the playing hole forming member 50 so as to correspond to the nine playing holes, and these vent holes 50a are all formed by the air chamber forming member 56. Formed to communicate with the chamber.

The breath pressure switch plate 52 includes a substrate 52A and a flexible film 5
2B, a spacer 52C and a flexible film 52D are laminated.

Eight vent holes 52a are provided on the substrate 52A corresponding to the playing holes of eight note names C, D ... C ', and the flexible film 52B is arranged on the substrate 52A so as to overlap each other. To be done.

Eight contact points Pb are provided on the upper surface of the flexible film 52B so as to correspond to the playing holes of eight note names C, D ... C ', respectively, and these contact points Pb are provided through corresponding conductive layers. Connected to common terminal CT. Also note names C, E, G,
Regarding the playing holes to be blown corresponding to C ', vent holes Nb are provided near the respective contact points corresponding to these playing holes. These vent holes Nb are formed so as to communicate with the eight vent holes 52a of the substrate 52A that correspond to the note names. On the flexible film 52B having such a configuration, the spacer 52C is arranged so as to overlap.

The spacer 52C has an insulating property and is C, D ... C '.
Eight holes S are provided corresponding to the respective eight note names. These holes S are formed so as to expose the corresponding contacts in the note name and the vent holes Nb in the vicinity, if any, when the spacer 52C is overlaid on the flexible film 52B. Spacer 52C with such a configuration
A flexible film 52D is placed on top of the above.

Eight contact points Pd are provided on the lower surface of the flexible film 52D so as to correspond to the playing holes of eight note names C, D ... C'and face the above-mentioned eight contact points Pb, respectively.
These contacts Pd can be connected to an external circuit via the corresponding conductive layers. Further, regarding the play holes to be sucked corresponding to the note names D, F, A and B, the vent holes Nd are provided in the vicinity of the respective contact points corresponding to these play holes.
By stacking the playing hole forming member 50 on the flexible film 52D having such a structure, a playing hole array as shown in FIG. 10 is formed.

FIG. 12 shows the breath pressure detecting portion 54 in a partially cut form, and the cut surface is obtained by vertically cutting the air chamber forming member 56 so as to pass through the vent holes 56a and 56b provided at both ends thereof. It was obtained.

The air chamber forming member 56 forms an air chamber together with the playing hole forming member 50 and the breath pressure switch plate 52 as shown in FIG. 10, and this air chamber is shown in FIG. Ventilation holes 50a are connected to all the playing holes. Further, a current plate 58 is provided in the air chamber so as to cover the breath pressure detection area 60. This straightening board 58
Is for preventing exhalation or inspiration from directly acting on the breath pressure detection area 60.

In the breath pressure detection area 60, as the breath pressure detection means, the structure as described in FIG. 8 is used, and the opening area of the hole S in the breath pressure switch plate 52 of FIG. 11 is as shown in FIG. Different ones or known ones are provided. The output extracted from the breath pressure detecting means in accordance with the strength of the breath pressure is used to control the volume and the like.

According to the configuration of the breath pressure detecting unit 54 as described above, it is possible to detect the breath pressure common to all the performance holes, and the configuration is simplified.

Next, with reference to FIGS. 13 (A) and 13 (B), the breath pressure switch operation by the expiration and inspiration in the breath pressure switch plate 52 will be described.

FIG. 13 (A) shows a breath pressure switch that responds to exhalation. When the expiratory pressure from the playing hole to be blown reaches a predetermined strength, the portion of the flexible film 52D corresponding to the hole S moves downward. As it flexes, the contact Pd comes into contact with the contact Pb and turns on. At this time, the hole S communicates with the atmosphere via the vent hole Nb.

Further, FIG. 13 (B) shows a breath pressure switch which responds to inhalation, and the hole S communicates with the playing hole to be sucked through the vent hole Nd. When the intake pressure reaches a predetermined strength, the contact point Pb comes into contact with the contact point Pd as the portion of the flexible film 52B corresponding to the hole S bends upward, and is turned on.

The 8-bit digital output from the breath pressure switch plate 52 as described above is used to determine the tone generation timing and tone pitch in the same manner as in the first embodiment. Further, in the breath pressure switch plate 52, as shown in FIGS. 13 (A) and 13 (B), the breath pressure switch for exhalation detection and the breath pressure switch for inhalation detection need only have different vent positions. Since they have almost the same structure, they are easy to design and manufacture, and the structure of the harmonica is also simple.

Modified Example In each of the above-described embodiments, each breath pressure switch is turned on according to the breath pressure, but it may be turned off. Further, in each breath pressure switch, one of the two contact points facing each other is movable according to the breath pressure, but this is a conductive member in which the two contacts are juxtaposed and the space between these contacts is movable according to the breath pressure. The short circuit may be performed (for example, provided on a part of the flexible film) or the short circuit may be released.

[Effects of the Invention] As described above, according to the present invention, a breath pressure switch plate common to the playing hole to be blown and the playing hole to be sucked is provided, and each breath pressure switch of the breath pressure switch plate corresponds thereto. Since the exhalation or the inhalation of the playing hole is detected, the configuration can be greatly simplified as compared with the conventional case where separate breath pressure switch groups for exhalation detection and inspiration detection are provided. . Therefore, the harmonica main body can be easily designed and manufactured, the cost can be reduced, and the electronic harmonica that is lightweight, compact and easy to handle can be realized.

In addition, as shown in the first and second embodiments, if a large number of breath pressure switches have substantially the same structure in the breath pressure switch plate, the design / manufacturing becomes very easy and the cost is significantly reduced. There is also an advantage that it can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an electronic harmonica according to a first embodiment of the present invention, and FIG. 2 is a ventilation hole forming member in the electronic harmonica.
32 is a front view and FIG. 3 is a breath pressure switch plate in the above electronic harmonica.
36 is an exploded perspective view of 36, FIG. 4 is a perspective view of the breath pressure detection unit 42 in the electronic harmonica, FIG. 5 is a cross-sectional view showing a valve arrangement of the vent holes in the vent hole forming member 40 of FIG. 6 and 7 are sectional views taken along lines XX 'and YY' of FIG. 1, respectively. FIG. 8 is an exploded perspective view of the breath pressure detecting plate 46 in the electronic harmonica, and FIG. 8 is a sectional view of the switch portion of the breath pressure detecting plate 46 of FIG. 8, FIG. 10 is a perspective view showing an electronic harmonica according to a second embodiment of the present invention, and FIG. 11 is an electronic diagram of FIG. The exploded perspective view of the performance hole forming part in the harmonica, Fig. 12 is the breath pressure detecting part in the electronic harmonica of Fig. 10.
54 is a partial cross-sectional perspective view, and FIGS. 13 (A) and 13 (B) show the breath pressure switch plate 5 of FIG. 1-1.
FIG. 6 is a cross-sectional view for explaining a switch operation by exhalation / inhalation in FIG. 30,50 …… playing hole forming member, 36,52 …… breath pressure switch plate,
36A, 52A …… substrate, 36B, 52C …… spacer, 36C, 52B, 52D
…… Flexible film.

Claims (3)

[Claims] 1. A breath pressure switch plate on which (a) first and second breath pressure switches are formed, and (b) a performance hole which forms a first performance hole to be blown and a second performance hole to be sucked. Forming means for providing the first breath pressure switch with the expiratory pressure when the first playing hole is blown and the inspiratory pressure when sucking the second playing hole with the second breath pressure. A switch configured to give to a switch, the first breath pressure switch detects expiration of the first playing hole to generate a tone signal corresponding to the first playing hole, and An electronic harmonica characterized in that the inspiration of the second performance hole is detected by a second breath pressure switch to generate a tone signal corresponding to the second performance hole. 2. (a) A spacer having first and second holes, a flexible film fixed to one surface side of the spacer by covering the first and second holes, and the first and second holes. The first and the second arranged corresponding to
A breath pressure switch plate having first and second breath pressure switches corresponding to the first and second holes, respectively. The switch is configured to switch the first and second contact groups by bending portions of the flexible film corresponding to the first and second holes in accordance with breath pressure, (B) Playing hole forming means for forming a first playing hole to be blown and a second playing hole to be sucked, wherein the expiratory pressure when the first playing hole is blown is one surface of the breath pressure switch plate. The second breath pressure switch is configured to be applied to the first breath pressure switch from the side and to the second breath pressure switch from the other side of the breath pressure switch plate when inhaling the second playing hole. With the first breath pressure switch. The expiration of the first performance hole is detected to generate a tone signal corresponding to the first performance hole, and the second breath pressure switch detects the inhalation of the second performance hole to detect the second sound hole. An electronic harmonica characterized by generating a musical tone signal corresponding to the performance hole. (A) A spacer having first and second holes, and a communication hole which is fixed to one surface side of the spacer by covering the first and second holes and which communicates with the second hole. The first flexible film having the first and second contact groups respectively arranged in the first and second holes and the other surface side of the spacer are fixed to cover the first and second holes. , A breath pressure switch having a second flexible film having a ventilation hole communicating with the first hole, and first and second breath pressure switches formed corresponding to the first and second holes, respectively. A plate, wherein the first breath pressure switch switches the first contact group by bending a portion of the first flexible film corresponding to the first hole in accordance with breath pressure. And the second breath pressure switch Is configured to switch the second contact group by bending a portion of the second flexible film corresponding to the second hole according to the breath pressure, and (b) blow it. A playing hole forming means for forming a first playing hole and a second playing hole to be sucked, wherein the expiratory pressure when the first playing hole is blown is from the one side of the breath pressure switch plate to the first side. Of the breath pressure switch plate and the suction pressure when sucking the second play hole from the one surface side of the breath pressure switch plate to the second breath pressure switch. , The first breath pressure switch detects the expiration of the first performance hole to generate a tone signal corresponding to the first performance hole, and the second breath pressure switch causes the second performance hole. To detect the intake of the An electronic harmonica characterized by generating a corresponding tone signal.