JP3368748B2 - Electronic drum device - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an electronic musical instrument,
Particularly, the present invention relates to an electronic drum device suitable for drum-like performance operation.

[0002]

2. Description of the Related Art Basically, a tone signal forming circuit for electronic musical instruments can generate tone signals of various tones. Although the keyboard is most often used as a performance operator for electronic musical instruments, it is inconvenient to perform the performance on the keyboard to generate musical tones of wind instruments such as saxophone and clarinet and percussion instruments such as cymbals and drums. . Therefore, an electronic drum device suitable for playing a drum is used to generate a musical tone like a drum.

The electronic drum device basically detects an impacted part (pad) for performing a performance operation by impacting with a stick or the like and an impact (impact, impulse) applied to the impacted part and outputs an electronic signal. And a sensor that does.

The simplest configuration would be one in which a disk made of iron or the like is held by a support and a sensor is attached to the back surface of the support.
The disk serves as a vibrating body that transmits the impact, and the impact is transmitted to the sensor. However, the shape of the disc, the holding method,
Sensitivity unevenness occurs depending on the sensor mounting position and the impact point. A musical tone different from the musical tone intended by the player is generated.

For example, if a person strikes directly above the sensor, a loud sound may be produced even with a small impact, but only a small sound may be produced even if a large impact is applied in a place away from the sensor. Typically, there is a dead point where no sound is produced even when the pad is hit.

If a plurality of pads are arranged on one support and a plurality of drums can be selectively played, when one pad is struck, vibration is transmitted to another bat. A phenomenon (jumping) may occur. In order to prevent such jumping, it is preferable to attach each pad to the support member via an elastic body.

In order to reduce the sensitivity unevenness, it is desired that the hits given to the pad be made uniform and transmitted to the sensor. One way would be to attenuate the impact on the pad while transmitting it to the sensor. For example,
A configuration has been proposed in which an elastic body such as foam sponge is sandwiched between a vibrating body and a sensor. However, if such a configuration is adopted, the shock wave is attenuated while being transmitted from the pad to the sensor. Therefore, even if the sensitivity unevenness is reduced, the sensitivity itself is also reduced.

In order to reduce sensitivity unevenness, Japanese Patent Laid-Open No. 6-222775 proposes a structure in which a sensor is separated from a pad and fixed on a sensor board, and the sensor board is connected to a pad plate via studs at a plurality of positions. is doing.
The impact given to the pad is transmitted from the pad plate to the stud, and is transmitted to the sensor via a plurality of paths. The sensor adds and receives the vibrations transmitted from the plurality of paths to form an output signal. Since the vibrations are added via the plurality of paths, the sensitivity unevenness is reduced.

Since the sensor board is attached to the back surface of the pad via the stud, the height of this pad composite is increased as compared with the conventional pad. Further, the peripheral portion of the pad is supported on the support member by an elastic body. Since the studs and the sensor board are attached to the back surface of the pad, the height of the elastic body must be higher than that of the conventional one. As the height increases, the horizontal cross-sectional area of the elastic body must also be set large (the column must be thick) in order to give it strength to withstand impact. Alternatively, it is conceivable to use an elastic body on a single donut having a sufficient thickness to support the pad on the support member.

However, in order to place the sensor board on the back surface of such a pad, the sensor board needs to have a radius smaller than that of the elastic body so as not to contact the elastic body.

[0011]

SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic drum device having high sensitivity and less unevenness in sensitivity.

Another object of the present invention is to provide an electronic drum device which can be compactly structured and can improve space utilization.

[0013]

According to one aspect of the present invention, a sensor unit for sensing a hit is coupled to a pad body having a hit surface, and a tone signal is generated according to a sensor output from the sensor unit. An electronic drum device,
A pad body is arranged on one side of a support plate member having a plurality of through holes, and a sensor unit is arranged on the other side, and the pad body is held on one side of the support plate member via a plurality of elastic holding bodies separated from each other. The pad body has a pad plate and a surface of the pad that covers the surface thereof, and has a pad skin body that constitutes a surface to be hit, and the sensor unit arranged on the other side of the support plate member is
A sensor plate member and a sensor body fixed to substantially the center thereof, and fixed to the pad body arranged on one side of the support plate member via a plurality of studs penetrating the through hole; There is provided an electronic drum device in which an outer edge of a stud with respect to the pad body center is arranged outside of an inner edge of the elastic holding body with respect to the pad body center.

According to another aspect of the present invention, there is provided an electronic drum device in which a sensor unit for sensing a hit is coupled to a pad body having a hit surface, and a musical tone signal is generated according to a sensor output from the sensor unit. And a pad body is arranged on one side of the support plate member having a plurality of through holes, and a sensor unit is arranged on the other side, and a plurality of elastic holders are provided at different positions in the azimuth direction of the peripheral portion of the pad body. An electronic device in which a plurality of studs are arranged, the pad body and the support plate member are coupled via the elastic holding body, and the sensor unit is connected to the pad body via the studs penetrating the through hole. A drum device is provided.

By disposing the pad body and the sensor unit separately on both sides of the support plate member having a plurality of through holes,
The structure is compact and easy to assemble, and the space utilization rate can be increased. Since the plurality of through holes are for penetrating the stud, they may be groove-shaped through holes partially opened. Further, the elastic holding body that supports the pad body on one side of the support plate member does not directly limit the size of the sensor unit arranged on the other side of the support plate member. Further, since the pad body can be arranged close to the support plate member, the size or cross-sectional area of the elastic holding body can be reduced.

Further, by forming the elastic holding body for supporting the pad body by a plurality of elastic holding bodies separated from each other, the studs for connecting the sensor plate member of the sensor unit and the pad body can be arranged in the region between them. It will be possible.
Therefore, it becomes easy to increase the space utilization rate.

Further, the sensor plate member has a central portion and a plurality of bridge portions extending outward from the central portion, and the adjacent bridge portions are notched so that the space utilization factor is further improved. It becomes possible to raise.

According to the research conducted by the inventor of the present invention, the stud for connecting the sensor plate member to the pad body can have higher sensitivity when it is arranged on the outer periphery of the pad body as much as possible, and the stud structure has a plurality of studs. By doing so, sensitivity unevenness can be reduced.

With the above-mentioned structure, it is possible to arrange the elastic holding body for supporting the pad body and the stud together on the outer peripheral portion of the pad body.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It has been found that the sensitivity unevenness of the electronic drum device can be reduced by mounting the sensor of the electronic drum device on the sensor plate and connecting it to the pad body at a plurality of points. Further, in order to improve the sensitivity of the electronic drum device, it has been found that it is preferable that the position of the stud that connects the sensor plate and the pad plate is closer to the outer periphery of the pad plate.

However, if the structure of the conventional electronic drum device in which the pad body is held at its peripheral portion by the loop-shaped elastic body is adopted, the position of the stud must be inward from the outer periphery of the pad body. Further, if the height of the composite body of the pad body and the sensor unit becomes high, the sensor unit must have a small diameter due to the space required for the elastic holding body.

FIG. 1 schematically shows the structure of an electronic drum device according to an embodiment of the present invention. 1A shows a sectional view of the electronic drum device, and FIG. 1B shows a bottom view of the electronic drum device.

As shown in FIG. 1 (A), the pad plate 11 formed of a disk-shaped iron plate has sufficient strength suitable for being hit with a stick or the like. The upper surface of the pad plate 11 is covered with a pad skin 13 made of rubber or the like,
It constitutes the surface to be hit. The pad skin 13 is the pad plate 1
1 from the upper surface to the outer periphery to the peripheral lower surface. The pad plate 11 and the pad skin body 13 form the pad body 10.

Continuing with the pad skin 13, the pad plate 1
1 a plurality of cylindrical elastic holders 5 in the peripheral portion of the lower surface
d projects downward. The tip of the elastic holding member 5d forms a small diameter portion whose radius is once reduced and then increases again to form a hook portion 6d.

The elastic holder and the hook portion at the tip thereof are arranged at four positions on the disk, as shown in FIG. 1 (B). The four hooks are indicated by 6a, 6b, 6c and 6d.
Although the fishing part 6 pushes into the through hole of the support plate member 30b to support the pad body 10, other supporting methods such as adhesion may be used.

On the lower surface of the pad plate 11, a plurality of cylindrical studs 1 formed of a material having sufficient strength such as iron.
Are welded. One stud 1 is shown in Fig. 1 (A).
1A, the studs 1a, 1b, 1c are arranged under the screws 2a, 2b, 2c of FIG. 1B, respectively. The stud 1 is arranged on the outer peripheral portion at a position where the pad plate 11 is divided into three parts.

The sensor plate 21 of the sensor unit 20 is placed on the bottom surfaces of the studs 1a, 1b, 1c, and the screws 2
It is fixed by a, 2b and 2c. Sensor plate 21
As shown in FIG. 1B, is a central portion 21d on which a sensor body 23 formed of a piezoelectric sensor or the like is placed, and a bridge body 21 extending outward from the central portion 21d in the radial direction.
It is composed of a plate-shaped member including a, 21b, and 21c. The tips of the bridge bodies 21a, 21b, 21c are joined to the tips of the studs 1a, 1b, 1c.

A support plate member 30b, which is a part of the case 30, is arranged between the pad body 10 and the sensor unit 20. A plurality of through holes are opened in the support plate member 30b. The stud 1 penetrates through the through hole 31.
The through hole 31 has a diameter sufficiently larger than the diameter of the stud 1,
The stud 1 is allowed to vibrate without coming into contact with the support plate member 30b.

The through hole 31 is for penetrating the stud 1 and is not limited to a circular shape. It may be a groove or a notch of any shape. As shown in FIG. 1A, an annular rib 30 a projects from the upper surface of the case 30 so as to surround the pad body 10.

Further, the elastic holder 5 has a support plate member 30b.
Of the pad body 1 by being pushed into the through hole 33 of the base plate 3 and being joined, and the hook portion 6 expands again on the lower surface of the support plate member 30b.
0 is supported on the support plate member 30. The elastic holding body 5 holds the pad body 10 at four positions as shown in FIG. 1 (B). Due to the elasticity of the elastic holder 5, the pad plate 11 can vibrate almost freely by an impact.

As shown in FIG. 1 (B), the pad body 10 is supported by the support plate member 30b by the elastic holding members 5a, 5b, 5c and 5d at four positions, and the studs 1a and 1 at three positions.
b and 1c penetrate the through holes 31a, 31b and 31c to couple the pad body 10 (pad plate 11) to the sensor plate 21.
The impact on the pad body 10 is transmitted from the pad plate 11 to the sensor plate 21 via the stud. Since the pad plate 11 and the sensor plate 21 are connected at three points, a substantially uniform impact is transmitted to the sensor plate 21 regardless of which position of the pad plate 11 is hit.

The sensor plate 21 of the sensor unit 20
However, it has been described that the disk-shaped central portion and the three beam portions (bridge bodies) symmetrically projecting in the radial direction from the central portion are described, but the number of bridge bodies is not limited to three. However, if the number of bridge bodies is increased too much, the pad board 1
Vibration of 1 is restricted and sensitivity is reduced. Also, if the pad plate and the sensor plate are connected at only one place, for example, uneven sensitivity will occur. If the number of studs connecting the pad plate and the sensor plate is 3 or more, sensitivity unevenness can be substantially reduced.

Further, the sensor plate 21 of the sensor unit 20
By making the area between the three bridge bodies cut out, the mass of the sensor plate 21 can be reduced and the impact can be efficiently transmitted to the sensor body 23.

Further, since the elastic holder has a small cross-sectional area which is arranged only at four places, the pad body has a sufficient space for arranging studs and other structures in the outer peripheral portion thereof. Therefore, if you choose a location in the circumferential direction,
The stud 1 can be arranged sufficiently close to the outer contour of the pad body 10. By bringing the studs close to the outer contour of the pad plate, it is possible to efficiently transmit an impact from the pad plate 11 to the sensor plate 21 and improve the sensitivity of the drum device.

Further, the support plate member 30b is the pad plate 11
Since it is arranged between the sensor plate 21 and the sensor plate 21, the height of the elastic holder 5 can be made sufficiently small. By reducing the height of the elastic holder 5, the required strength is also reduced, and the pad body 10 can be held with sufficient strength even if the elastic holder 5 has a small cross-sectional area.

As shown in FIG. 1B, the sensor plate 21 has a shape having only the bridge bodies 21a, 21b, 21c extending only at three circumferential positions in the region outside the central portion 21d. , A sufficient space is secured between the bridge bodies. As described below, in this space,
It is also possible to arrange other structures.

FIG. 2 schematically shows a top view of an electronic drum device having a plurality of hit surfaces. On the upper surface of the electronic drum device 50, the pad body 1 constituting four large hit surfaces is formed.
0a to 10d and a striking surface smaller than that 3
One pad body 10x to 10z is arranged.

On the left and right of the upper surface, speakers 52a,
52b is arranged so that stereo sound can be generated. Below the upper surface of the electronic drum device 50, switches,
An operation panel 54 provided with a dial, a display, etc. is arranged. The bottom side of the electronic drum device 50 is indicated by a broken line 56.
As shown by, the recess is provided, and a connection terminal for connecting a lead wire or the like from the outside is provided.

FIG. 3 is a partially cutaway perspective view of the bottom surface side of the electronic drum device shown in FIG. The drum structure described with reference to FIG. 1 is shown in the left portion of FIG. A fitting boss 30d is formed in the middle of the bridge bodies 21b and 21c so as to project from the support plate member 30b which is a part of the case 30 and to be coupled to the lower case.

A drum structure similar to that of the left side portion is arranged in the right side portion of FIG. 3, and a substrate 61 is arranged on the upper surface side (lower surface in terms of structure) of the drum structure. The board 61 mounts an electronic circuit for processing the sensor output, and is screwed to the board supporting boss 30e protruding from the supporting plate member.

A strip-shaped member 64 for supporting the MIDI terminal 65 is integrally formed on the substrate 61. M
The IDI terminal 65 is held by the belt-shaped member 64, and is further engaged with the upper rib 30f protruding from the support plate member.

As shown in FIG. 4, the lower rib 35f also projects from the lower case. Upper case 30x, lower case 35
The upper rib 30f and the lower rib 35f together with
The MIDI terminal 65 is firmly held via a and 67b.

FIG. 5 shows the construction of an electronic drum assembly according to another embodiment of the present invention. The difference from the embodiment of FIG. 1 will be mainly described. Through holes 12 are formed in three places on the pad plate 11. Hard resin injection molding is performed on the pad plate 11, and the hard resin stud body 7 coupled to the through hole 12 is formed.
To form. Although one stud body 7a is shown in the figure,
Three through holes 12 are formed in the pad plate 11, and the stud body 7 is coupled to each through hole 12. In this way, three stud bodies 7 are formed as in the stud 1 of FIG. The stud body 7a has a columnar structure, and has a large-diameter portion at its tip through a small-diameter portion.

After the hard resin stud body 7 is formed, the pad plate 11 is placed in another mold, and the soft resin is injection-molded to form the skin body 13 and the elastic support body 5. Although one elastic support 5d is shown in the drawing, four elastic supports 5a-5d are formed as in the configuration of FIG.

Unlike the structure shown in FIG. 1, the studs are made of a hard resin formed by injection molding instead of being made of metal columns welded to the pad plate. Therefore, the manufacturing process of the stud is simplified and the manufacturing cost can be reduced.

Although the sensor plate 21 may be fixed to the hard resin stud 7 with screws, the use of screws is omitted in the illustrated configuration. FIG. 5B shows
The structure of the sensor plate 21 suitable for connecting with the stud body 7 shown in FIG. 5 (A) is shown. A through hole 22 in which a large-diameter portion and a small-diameter portion are joined is formed at the tip of the bridge body of the sensor plate 21. By inserting the tip of the stud body 7a into the large diameter portion and rotating the sensor plate 21 in the circumferential direction, the small diameter portion of the stud body 7a is coupled to the small diameter portion of the through hole 22. This enables the sensor plate 21 to be fixed to the pad body 10 without screws.

The other structure of FIG. 5 is the same as that of the embodiment of FIG. As described above, by arranging the pad body on one side of the support plate member and arranging the sensor unit on the other side, the pad body can be arranged close to the support plate member, and the pad body is supported. The structure of the elastic holder for holding the plate member is simplified.

Further, by disposing the elastic holder in a limited area in the circumferential direction, the studs for connecting the pad body and the sensor unit can be freely arranged in other areas. The sensitivity of the sensor can be improved by disposing the stud close to the outer contour of the pad body. In this way, an electronic drum having less sensitivity unevenness and high sensitivity is provided.

The present invention has been described above with reference to the embodiments.
The present invention is not limited to these. For example,
The planar shape of the pad may be a polygon such as a triangle or a quadrangle, or an ellipse. Even if formed in this way, the meaning of the pad body in the azimuth direction in claim 3 is still understood as the meaning of the azimuth direction viewed from the substantial center. Other,
It will be apparent to those skilled in the art that various changes, improvements, combinations and the like can be made.

[0050]

As described above, according to the present invention,
Provided is an electronic drum device having little sensitivity unevenness and high sensitivity.

[Brief description of drawings]

FIG. 1 is a sectional view and a bottom view showing a configuration of an electronic drum device according to an embodiment of the present invention.

FIG. 2 is a top view showing the entire electronic drum device.

FIG. 3 is a partially cutaway perspective view from the bottom side of the electronic drum device.

FIG. 4 is a schematic cross-sectional view showing a millimeter terminal holding portion in FIG.

FIG. 5 is a sectional view and a partial plan view showing an electronic drum device according to another embodiment of the present invention.

[Explanation of symbols]

1 stud, 2 screw, 5 elastic holder,
6 hooks, 7 studs, 10 pads,
11 pad board, 13 pad epidermis, 20
Sensor unit, 21 sensor plate, 23 sensor body

Claims (3)

(57) [Claims] 1. An electronic drum device, comprising: a pad body having a hit surface, a sensor unit for sensing a hit, and a musical tone signal generated in response to a sensor output from the sensor unit; The pad body is arranged on one side of the support plate member, the sensor unit is arranged on the other side, and the pad body is held on one side of the support plate member via a plurality of elastic holding bodies separated from each other. The sensor unit disposed on the other side of the support plate member is fixed to the sensor plate member and substantially the center thereof. A sensor body, and is fixed to the pad body arranged on one side of the support plate member through a plurality of studs penetrating the through hole, and an outer edge of the stud with respect to the center of the pad body. Is the above It is disposed outside the inner edge with respect to the pad body center of sex holder, electronic drum device. 2. The sensor plate member has a central portion to which the sensor body is fixed and a plurality of bridge portions extending outward from the central portion, and adjacent bridge portions are cut away from each other, The electronic drum device according to claim 1, wherein a tip of the bridge portion is fixed to the stud. 3. An electronic drum device for connecting a sensor unit for sensing a hit to a pad body having a hit surface to generate a musical tone signal according to a sensor output from the sensor unit, which has a plurality of through holes. A pad body is arranged on one side of the support plate member, a sensor unit is arranged on the other side, and a plurality of elastic holders and a plurality of studs are arranged at different positions in the azimuth direction of the peripheral portion of the pad body, An electronic drum device in which the pad body and the support plate member are coupled via the elastic holding body, and the sensor unit is connected to the pad body via the stud that penetrates the through hole.