JPH07199943A - Electronic percussion instrument - Google Patents

Abstract

PURPOSE:To improve the strength of the pad mounting part of an electronic percussion instrument and to prevent the jump of the instrument at the time of striking a pad. CONSTITUTION:A speaker 4 is installed at the lower part of the pad 3 of this electronic percussion instrument 1 and a speaker frame 41 is supported from an upper part by a rib 8 extended from the pad mounting part 21. Since the speaker 4 is pressed onto the rising part 98 at the rear part of the lower case 9 by inclining the rib 8 and a side part is supported by a side board rib 92, the speaker 4 can be fixed without the need of a speaker fixing screw. Also, pad striking force 15 received by the speaker 4 and the strength of the pad mounting part 21 is improved. Since the speaker 4 is present in the direction of the striking force, the centroid of the instrument and a striking position become adjacent and the jump is eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument, and more particularly to an electronic percussion instrument which is an electronic percussion musical instrument such as a drum.

[0002]

2. Description of the Related Art In recent years, a plurality of pads equipped with pressure sensors and the like are arranged on the upper part of a case, and a player hits the pads with a drum stick or a hand to percussion the percussion force (keystroke force) detected by the pads. Percussion instrument (that is,
Electronic percussion instruments are known.

In most of the electronic percussion instruments, an electronic circuit component constituting a sound source section is housed inside a casing defined by assembling an upper case and a lower case. In addition to the pad, a speaker for outputting percussion instrument sound is attached.

[0004]

However, the musical instrument striking surface portion of the electronic percussion instrument described above has a structure in which the pad assembly is fitted into the recess formed in the upper case, and the portion to which these pads are mounted is Since it is necessary to dispose a speaker or a sound output hole from the speaker, it is relatively far away from the part where the upper case and the lower case are fitted together, and below the upper case part other than the electronic circuit board. It was the current situation that nothing was installed and the structure was almost hollow. For this reason, the pad mounting part to which the largest external force (keystroke force) is applied has a problem in strength compared to other parts, and it may deform into a concave shape due to long-term use, or even crack around the pad. There is a fear.

Further, since these electronic percussion instruments have a structure in which a mass body such as a speaker is mounted in a case portion (for example, in the vicinity of an edge portion of the upper case) relatively distant from the pad mounting portion described above. , The pad keying position and the center of gravity of the instrument are out of alignment. As a result, a large moment is generated around the center of gravity due to the keystroke force on the pad,
There is a problem that the musical instrument body tends to bounce due to the recoil of keystrokes, and the pad surface is formed obliquely with respect to the musical instrument installation surface, so that the musical instrument body moves forward by itself with playing.

In view of the above-mentioned problems, the present invention improves the strength of the pad mounting portion of an electronic percussion instrument and prevents the percussion instrument body from bouncing due to recoil when the pad is struck. The purpose is to provide.

[0007]

In order to achieve the above object, an electronic percussion instrument according to the present invention has a pad constituting a striking face portion in an upper case, and has a casing having a top and bottom case matching structure. In an electronic percussion instrument having a speaker built in the body, speaker supporting means for fixing the speaker in a housing is provided, and a pad mounting portion of the upper case is supported downward by the speaker supporting means.

In a preferred embodiment, the speaker supporting means has a rib integrally formed with the pad mounting portion and contacting the speaker.

Further, according to the present invention, an electronic percussion instrument having an upper case that opens downward and a lower case that opens upward and is fitted to the upper case is an electronic percussion instrument that projects toward the lower case. A speaker with a frame installed near the falling part or near the rising part of the lower case protruding toward the upper case, and a rising part of the lower case or near the rising part, which supports the speaker from below. And a speaker upper support portion that is provided in a falling portion of the upper case and supports the speaker from above, and a speaker side that is provided in the upper case or the lower case and laterally supports the speaker. One side support part and a pad which is installed in the upper case part located above the speaker or in the vicinity thereof and which constitutes a percussion instrument striking face part. It is characterized by a door.

Further, according to the present invention, in an electronic percussion instrument having a pad constituting a percussion instrument striking surface portion and having a casing of an upper and lower case matching structure, the pad is a component of the electronic percussion instrument housed in the casing. There is provided an electronic percussion instrument characterized in that it is arranged above the component having the largest mass.

[0011]

By supporting the pad mounting portion from below with the speaker supporting means, the speaker and the pad mounting portion are integrated via the speaker supporting means, and the keystroke force on the pad can be distributed to the speaker. . Further, since the speaker is located below the pad, the pad keying position that receives an external force and the center of gravity of the musical instrument are close to each other, and the moment around the center of gravity is reduced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a plan view (including a partial cross section) of the electronic percussion instrument of the present invention, and FIG. 2 is a cross-sectional view taken along the line AA of FIG. is there. As is apparent from FIG. 2, the electronic percussion instrument is formed by vertically stacking the upper case 2 and the lower case 9 as a whole. In FIG. 1, reference numeral 1 generally indicates an electronic percussion instrument. The electronic percussion instrument 1 has a plurality of (four in the figure) pads 3 mounted on the peripheral portion of the upper case 2 shown in this figure, and a speaker 4 shown by a dotted line in the figure is provided at the center of the upper case 2. A large number of sound emission slits 5 for making a back sound are formed. In addition, between the slits 5, rhythm patterns that can be adopted by the electronic percussion instrument 1 and various percussion names are described.

On the front side of the player below the slit 5, there is provided a percussion instrument operating section 6 having various operating elements such as a power switch, operation mode switching buttons, and rhythm selection switch which can be operated by the player.

As shown in the figure, the upper case 2 of the electronic percussion instrument 1 is formed with a pad mounting portion 21 which is slightly larger than the pads 3 so that four circular pads 3 can be mounted. Four semi-circular portions are formed so as to project with respect to the portion. In FIG. 1, among the two central pads 3 that sandwich the speaker 4, the hatched portion shown on the pad 3 located on the right side is located on the back side of the pad 3 (not visible from the exterior) and the upper case 2 The bosses 7 and 8 (which will be described later) integrally formed with each other are shown. Note that FIG.
The pad backside structure partially shown in FIG. 2 shows a cross section taken along the line BB in FIG.

According to this embodiment, the electronic percussion instrument 1 is
At the time of assembly, the lower case 9 is fitted into the upper case 2 (as if it were a lunch box) to form one casing (casing) 10. Therefore, a falling portion 22 that constitutes the side wall portion of the electronic percussion instrument 1 in the assembled state is formed on the peripheral edge of the upper case 2, and the lower portion of the upper case 2 is opened downward. In contrast,
The lower case 9 is formed by a bottom portion 91 that serves as a bottom portion of the electronic percussion instrument 1, and a rising portion 92 that is formed on the peripheral edge of the bottom portion 91 and that is fitted into the upper case falling portion 22.

Inside the housing 10 formed by these upper and lower cases 2 and 9, below the above-mentioned sound emitting slit 5, there is provided an electronic circuit board 11 having a sound source portion which also serves as the heart of the electronic percussion instrument 1. It is sandwiched between the board fixing boss 23 protruding from the upper case 2 and the board supporting bosses 93 and 94 protruding upward from the lower case bottom portion 91. In the vicinity of the electronic circuit board 11, there is provided a push-button type tone color selection switch 61 that constitutes the operation section 6 including the various operators, and a battery 91 is further provided on the bottom portion 91 below the board 11. 12 are stored, which enables the portable use of the electronic percussion instrument 1. Naturally, the electronic percussion instrument 1 can also be operated by a normal AC power source using an AC adapter (not shown).

The pad 3 forming the striking surface (also referred to as the key striking part) of the electronic percussion instrument 1 is made of an elastic material such as rubber, and the lower surface thereof has an iron plate 13 as a reinforcing member and an electric keying force. A pressure sensor 14 for converting into a signal is attached to each. Further, a plurality of bushes 31 are provided on the lower surface of the pad 3 around its center and outer circumference, and are fitted into the pad mounting holes 15 formed in the upper case 2 in the assembled state.

According to this embodiment, the housing 10 formed by the upper and lower cases 2 and 9 has a surface of the upper case 2 so that the player can easily hit the pad 3 and operate various switches. Consideration is made so that it is oblique to the bottom portion 91 of the lower case 9. Speaker 4 mentioned above
Is installed inside the wedge-shaped housing 10 and below the illustrated pad 3.

The speaker 4 is composed of a speaker frame 41 that abuts a rising portion 92 located on the rear side (right side in FIG. 2) of the lower case 9 and a speaker main body portion 42, and is integrally formed on the lower case bottom portion 91. The speaker support base 95 is supported downward. The speaker support base 95 is also integrally formed with the lower case bottom portion 91 by being combined with a case matching boss 94 extending from the bottom portion 91 toward the upper case 2. The tip of the case matching boss 94 is fixed by a screw 16 to the boss 23 located substantially in the center of the upper case 2 with the substrate 11 interposed therebetween.

Pad mounting portion 2 formed on the upper case 2
Two bosses 7 and 8 projecting toward the case 9 below 1
One of the bosses 7 is fixed to the case-matching boss 96 formed on the lower case 9 with a screw 16 to form a case-matching boss. On the other hand, the other boss 8 is engaged with the above-described speaker frame 41 at its tip portion, and urges the speaker 4 from above to the lower case 9 to support the boss 8 upward. Also, this boss 8
Is formed such that its frame engaging portion 81 is inclined with respect to the rising portion 98 in order to press the speaker frame 41 against the rising portion 98.

FIG. 3 is a perspective view of the external appearance of the single unit showing the details of the speaker frame engaging portion of the boss 8. As shown in FIG. 2, the frame locking portion 81 is reinforced by a rib 82 integrally formed on the lower side of the pad mounting portion of the upper case 2, and a groove 83 for sandwiching the speaker frame 41 is formed at the tip thereof. To be done. Due to the groove 83, the speaker frame 41 is firmly fixed without rattling.
Is pressed against the rising portion 98 of the
2 can be pressed against the speaker support base 95.
In addition, in the present embodiment as well, the lower case fixing portion 71 (FIG. 2) of the case matching boss 7 is similarly reinforced by the rib 72.

The above-mentioned bosses 7 and 8 have a pair of pad mounting portions 3 located above the boss 4 with the speaker 4 interposed therebetween.
Are provided for each. FIG. 4 is a partial external view (portion) of the electronic percussion instrument 1 body viewed from the rear of the speaker 4, and the pad mounting portion 21 located on the right side of the drawing is taken along the line CC in FIG. Shows.

As is apparent from FIG. 4, the bosses 8 supporting the upper portion of the speaker frame 41 extend downward from the left and right pad mounting portions 21 that sandwich the speaker 4, and FIG.
The case-matching boss 7 shown in FIG. 6 is located on the front side of the illustrated boss 8 (shown by a two-dot chain line in FIG. 4).

Further, the speaker frame 41 is pressed and held by the boss 8 described above, and is sandwiched from both sides by a pair of side plate ribs 92 projecting from the bottom portion 91 of the lower case 9. The side plate ribs 92 prevent rattling of the speaker 4 in the left-right direction in FIG. In this embodiment, the speaker frame 41 is further
In the rising portion 98 of the lower case 9 to be contacted with, a large number of sound emission slits 17 for outputting the sound from the speaker 4 toward the rear of the musical instrument are formed.

As described above, according to this embodiment, the loudspeaker 4 of the electronic percussion instrument 1 is arranged inside the housing 10 so that the sound is produced toward the rear of the musical instrument, and the upper case 2 is provided.
The upper part of the speaker is supported by a pair of ribs 8 provided on the speaker support base 95 provided on the lower case 9.
Since the lower part and the side part of the speaker are supported by the pair of side plate ribs 92, the speaker 4 can be firmly fixed inside the housing 10 without using a fastening tool such as a mounting screw.

In addition, in this embodiment, since the speaker frame 41 and the pad mounting portion 21 of the upper case 2 are integrated via the pair of ribs 8, the keying force received by the pad 3 (see FIG. 2) can be transmitted and dispersed to the bottom portion 91 of the lower case 9 via the boss 8 and the speaker frame 41, and the strength of the pad mounting portion 21 can be maintained in a high state.

Further, the electronic percussion instrument 1 according to this embodiment is
Since the speaker 4, which is relatively heavier than the other musical instrument components, is arranged below the pad 3 that receives the greatest force, the pad position to be tapped and the center of gravity of the musical instrument (for example, indicated by G in FIG. 2). ) Can be made shorter than that of a conventional electronic percussion instrument, whereby the moment force around the center of gravity due to keystroke can be reduced and jumping (jumping) of the instrument body can be suppressed.

Although one embodiment according to the present invention has been described above, in addition to the illustrated ribs 8 and side plate ribs 92, for example, a U-shaped cross section may be used as a mode for fixing the speaker in the housing without screws. A groove (not shown) may be integrally formed on the rising portion 98, and the speaker frame 41 may be mounted by fitting the speaker frame 41 into the groove from above. Further, in the above-described embodiment, the structure in which the speaker 8 is pressed from above by the ribs 8 is held, but the speaker frame 41 is pressed and held from above both sides so that the pressing forces of the ribs 8 on both sides are directed obliquely inward downward. By doing so, it is possible to direct the downward biasing force also toward the speaker center direction and thereby also have the function of the side plate rib 92.

In the embodiment, among the four pads 3,
Although the structure is such that the speaker 4 is arranged between the two pads 3 at the center, naturally the speaker 4 may be installed near the lower parts of the pads 3 on both sides to increase the strength.
Further, in terms of preventing jumping, other heavy objects (for example, a power transformer) may be arranged below the pad.

[0030]

As described above, according to the present invention, the speaker built in the electronic percussion instrument and the pad mounting portion are integrally connected, so that the key pressing force on the pad can be supported by the speaker. The strength of the pad mounting portion of the case can be improved.

Further, by disposing a speaker, which is a heavy object, under the pad, the pad keying position for receiving an external force and the center of gravity of the musical instrument are close to each other, so that the musical instrument can be prevented from jumping.

[Brief description of drawings]

FIG. 1 is a plan view of an electronic percussion instrument as an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the musical instrument taken along the line AA of FIG.

FIG. 3 is an external perspective view of the rib shown in FIG.

FIG. 4 is a view showing a rear portion of the musical instrument including a cross section taken along line CC of FIG.

[Explanation of symbols]

 1 Electronic Percussion Instrument 2 Upper Case 3 Pad 4 Speaker 8 Rib (Speaker Upper Supporting Part) 21 Pad Mounting Part 22 Falling Part 92 Side Plate Rib 95 Speaker Supporting Base (Speaker Lower Supporting Part) 98 Rising Part

Claims (4)

[Claims] 1. An electronic percussion instrument in which a pad constituting a striking surface portion is arranged in an upper case, and has a casing of upper and lower case matching structure, and a speaker is built in the casing, wherein the speaker is fixed in the casing. The electronic percussion instrument is characterized in that the speaker mounting means is provided and the pad mounting portion of the upper case is supported downward by the speaker supporting means. 2. The electronic percussion instrument according to claim 1, wherein the speaker support means has a rib integrally formed with the pad mounting portion and in contact with the speaker. 3. An electronic percussion instrument, comprising: an upper case that opens downward; and a lower case that opens upward and is fitted to the upper case, the fall of the upper case protruding toward the lower case. A speaker with a frame, which is installed in the vicinity of the portion or in the vicinity of the rising portion of the lower case protruding toward the upper case; and a speaker which is provided at or near the rising portion of the lower case and supports the speaker from below. A lower support portion, a speaker upper support portion provided on a falling portion of the upper case and supporting the speaker from above, and a speaker side support provided on the upper case or the lower case and laterally supporting the speaker. Electronic percussion instrument having a portion and a pad that is installed above the speaker or in the vicinity of the upper case portion and that constitutes a percussion instrument striking surface portion. . 4. A pad comprising a percussion instrument striking surface portion,
In an electronic percussion instrument having a casing having a case-matching structure, the pad is arranged above an electronic percussion instrument component having the largest mass among the electronic percussion components contained in the casing. Percussion instrument.