JP2007249140A - Electronic percussion instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic percussion instrument which can easily be played. <P>SOLUTION: A shell part 2 is a member forming the skeleton of the electronic percussion instrument 1, and a head support part 2b formed cylindrically and concentrically with the outer peripheral part 2a of the shell part 2 is formed on the inner periphery of the outer peripheral part 2a. The reverse surface of a head 5 is made to abut against the upper-end circumference of the head support part 2b, and an annular hoop 4 encloses the outer periphery of the head while imparting tension to the head 5. The hoop 4 has bolt holes 4b into which engaging bolts 7 are inserted and bolt head storage holes 4c storing heads of the engaging bolts 7 at positions defined by equally dividing the circumference by six at a hoop body 4a in contact with the annular head frame 5b of the head 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electronic percussion instrument, and more particularly to an electronic percussion instrument that can be easily played by separately forming a rim portion and a hoop portion that applies tension to a head.

  Conventionally, various electronic percussion instruments have been proposed, and for example, there is a so-called electronic drum imitating an acoustic drum. This electronic drum is provided with a sensor that detects vibration due to impact, and is configured to control a sound source based on a detection signal of the sensor to generate a musical sound corresponding to the impact.

  Here, in the performance of the acoustic drum, in addition to the normal performance in which only the striking surface (head) is hit, the performance range is expanded by a so-called rim shot performance method. There are generally two types of rim shots: an open rim shot that strikes the rim and the hitting surface (head) at the same time to produce a unique harmonic overtone effect, and only the rim. There is a closed rim shot that produces a percussive sound.

Therefore, as a conventional electronic percussion instrument, a head as a striking surface disposed on the upper surface of the hollow body, a head sensor for detecting vibration caused by hitting the head, and vibration caused by hitting the rim are detected. There has been proposed a rim sensor that is configured to be able to reproduce a rim shot based on detection signals from these two sensors (for example, Patent Document 1).
JP 2004-198657 A

  However, in the structure described above, the outer periphery of the head is configured to be screwed to the body portion by the rim, so that adjusting the head tension changes the height between the head and the tip of the rim, resulting in a rim shot. Playing becomes difficult. For example, when the head is new, the distance between the upper surface of the head and the tip of the rim is long. However, when the head is in use, the head is extended, and in order to maintain the same tension, a screw that applies tension to the head is turned. Then, the distance between the tip of the rim and the upper surface of the head is shortened. As described above, when playing a rim shot, the top of the head is struck with the tip of the stick and at the same time the rim is struck at the center of the stick, and if the distance between the top of the head and the rim tip changes, There was a problem that it was difficult to play.

  Further, in the rim mounting structure described above, when the rim is hit hard, the rim portion is pushed downward, and the force applied to the screw that applies tension to the head is released momentarily, causing the screw to loosen.

  In addition, the conventional electronic percussion instrument is configured such that the outer periphery of the head is screwed to the body portion by a rim, so that when the rim is hit, the vibration caused by the hit is transmitted to the head and the head vibration is reduced. An output is generated in the head sensor to be detected. For this reason, it is difficult to accurately detect the impact on the head and the impact on the rim independently, and there is also a problem that the musical sound intended by the performer cannot be obtained.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an electronic percussion instrument that can be easily played.

In order to achieve this object, an electronic percussion instrument according to claim 1 detects and outputs vibration caused by percussion, and includes a hollow cylindrical drum having a rim portion on the outer periphery and an inner periphery of the drum. And a head having a flat surface disposed below the upper end of the rim, and a cylindrical head support member that is in contact with the inner periphery of the lower surface of the head and is disposed inside the cylinder formed by the cylinder. And an annular hoop that surrounds the outer periphery of the head and that is disposed on the inner periphery of the barrel and applies tension to the head, and a head sensor that detects vibration of the head.

  The electronic percussion instrument according to claim 2 is the electronic percussion instrument according to claim 1, wherein the upper surface of the hoop is formed substantially flush with the upper surface of the head.

  The electronic percussion instrument according to claim 3 is the electronic percussion instrument according to claim 1 or 2, wherein the hoop is screwed to a plurality of internal threads formed on a frame connected to the head support member by a plurality of bolts. .

  An electronic percussion instrument according to a fourth aspect of the present invention is the electronic percussion instrument according to the third aspect, wherein the hoop has a bolt head accommodation hole for accommodating the head of the bolt so that the head of the bolt does not protrude from the upper surface of the hoop.

  The electronic percussion instrument according to claim 5 is the electronic percussion instrument according to any one of claims 1 to 4, wherein the body and the head support member are integrally formed of resin.

  An electronic percussion instrument according to a sixth aspect of the present invention is the electronic percussion instrument according to any one of the first to fifth aspects, further comprising a rim sensor for detecting vibration of the trunk.

  According to the electronic percussion instrument of claim 1, a hollow cylindrical drum having a rim portion on the outer periphery, and a head having a flat surface disposed on the inner periphery of the drum and below the upper end of the rim portion. A cylindrical head support member that is in contact with the inner periphery of the lower surface of the head and is disposed on the inner side of the cylinder formed by the cylinder, and surrounds the outer periphery of the head and is disposed on the inner periphery of the cylinder. Thus, even when the tension applied to the head is adjusted by the hoop, the height of the upper end of the rim portion from the upper surface of the head can be kept constant. Therefore, there is an effect that a rim shot can be easily performed. That is, it is possible to prevent the performance from becoming difficult due to a change in the height of the upper end of the rim from the upper surface of the head.

  Further, since the hoop is disposed on the inner periphery of the barrel, the outer periphery of the head is reduced, and the size of the generally expensive head can be reduced, so that the cost can be reduced.

  According to the electronic percussion instrument of the second aspect, in addition to the effect achieved by the electronic percussion instrument of the first aspect, the upper surface of the hoop is formed substantially flush with the upper surface of the head. It looks as if it forms a head surface. Therefore, there is an effect that the hitting surface feels larger than the surface of the actual head and the performance is easy.

  According to the electronic percussion instrument of the third aspect, in addition to the effect produced by the electronic percussion instrument of the first or second aspect, the hoop is screwed with a plurality of internal threads formed on a frame connected to the head support member by a plurality of bolts. Since it is stopped, the tension applied to the head can be easily adjusted by adjusting the bolt, and the striking force hitting the rim does not act on the hoop, thus preventing the bolt from loosening. There is an effect that can be done.

  According to the electronic percussion instrument of the fourth aspect, in addition to the effect of the electronic percussion instrument according to the third aspect, the hoop has a bolt head accommodation hole for accommodating the bolt head so that the head of the bolt does not protrude from the upper surface of the hoop. Therefore, the head of the bolt does not protrude from the upper surface of the hoop, and the head surface looks as if it is a wide surface including the upper surface of the hoop.

  According to the electronic percussion instrument of the fifth aspect, in addition to the effect of the electronic percussion instrument according to any one of the first to fourth aspects, the body and the head support member are integrally formed of resin, so that the cost is low. There is an effect that it can be manufactured.

  According to the electronic percussion instrument of the sixth aspect, in addition to the effect produced by the electronic percussion instrument according to any one of the first to fifth aspects, the rim sensor for detecting the vibration of the body is provided. Can be detected independently of each other. In the conventional electronic percussion instrument, in order to apply tension to the head by the rim, the hit applied to the rim is directly propagated to the head and output is also generated to the head sensor. Since the impact on the rim portion does not propagate directly to the head, there is an effect that the impact on the rim portion can be detected better.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The electronic percussion instrument 1 of the present invention is an electronic percussion instrument called a “electronic drum” that is played using a stick or the like, and includes a sensor that detects vibration caused by percussion. A musical sound device (not shown) is configured to control a sound source based on a detection signal of the sensor and generate a musical sound corresponding to the hit, and the generated musical sound is transmitted to the speaker device via the amplifier device. The sound is emitted from.

  FIG. 1 is an external perspective view of an electronic percussion instrument 1 according to an embodiment of the present invention. First, an external configuration of the electronic percussion instrument 1 will be described with reference to FIG. As shown in FIG. 1, the electronic percussion instrument 1 mainly includes a trunk portion 2, a rim cover 3, a hoop 4, and a head 5.

  FIG. 2 is an exploded perspective view showing these members in an exploded state. The hoop 4 is fixed by screwing and fixing the head 5, and the rim cover 3 has an outer peripheral portion 2 a of the trunk portion 2. It is configured so that it can be assembled by being fitted in.

  The trunk | drum 2 is a member which makes the frame | skeleton of the electronic percussion instrument 1, and as shown in FIG. 2, it is formed in the substantially hollow cylindrical shape with the resin material, for example. The outer periphery of the body portion 2 is formed in a cylindrical shape by an outer peripheral portion 2a erected almost vertically from the bottom portion 2g (see FIG. 4), and a rim cover 3 is fitted around the upper end of the outer peripheral portion 2a. Configure the rim.

  On the inner periphery of the outer peripheral portion 2a, a cylindrical shape that is concentric with the outer peripheral portion 2a is provided upright from the bottom 2g, and the head support member 2b is integrally formed with the bottom 2g and the outer peripheral portion 2a. The head support member 2 b is supported by a plurality of ribs 2 d that are radiating from the center direction of the cylinder and are erected vertically to the bottom 2 g formed on the body 2. A circular hole 2h is formed at the center of the cylinder of the bottom 2g so that the air in the body 2 can freely go to and from the outside.

  The lower surface of the head 5 is brought into contact with the upper end circumference of the head support member 2 b, and an annular hoop 4 surrounds the outer circumference of the head while applying tension to the head 5 along the outer circumference of the head.

The rim cover 3 is a rubber cover that is fitted into the upper end of the periphery of the cylindrical body 2. The rim cover 3 is covered with a relatively elastic rubber, whereas the body 2 is formed of a relatively hard resin. Thus, the hit feeling when the rim portion is hit with the stick belly or the like is improved. The rim portion described in the claims corresponds to a portion formed by the rim cover 3 and the outer peripheral portion 2a.

  The hoop 4 includes a bolt hole 4b into which the engagement bolt 7 is inserted into a hoop body 4a that contacts the annular head frame 5b of the head 5, and a bolt head storage hole 4c that stores the head of the engagement bolt 7. Is formed at a position obtained by dividing the circumference into six equal parts. Also, a female screw 2e into which the engagement bolt 7 is screwed into a position where the circumference is divided into six equal parts is formed inside the outer peripheral part 2a of the body part 2 and outside the head support member 2b. (See FIG. 3).

  The head 5 is a part configured as a striking surface that is struck by a stick or the like. It is configured to be bonded to a substantially annular head frame 5b.

  The engaging bolt 7 is a member that screw-couples the hoop 4 to the body portion 2 and applies tension to the head 5 by the hoop 4 and is made of steel.

  Here, when the head 5 is assembled to the electronic percussion instrument 1, first, the head 5 is placed on the head support member 2 b of the body 2 on the upper end side (upper side in FIG. 1), and the head 5 is respectively engaged with the bolt hole 4 b of the hoop 4. The mating bolts 7 are inserted, covered so as to cover the head frame 5 b of the head 5, and the respective engaging bolts 7 are screwed into the female screws 2 e formed on the body portion 2.

  As a result, the head 5 is sandwiched between the hoop 4 and the head support member 2 b, and the tension applied to the head 5 can be adjusted by tightening the engagement bolt 7. Further, when the rim shot is performed, the upper end of the outer peripheral portion 2a is hit and the hoop is not hit directly, so that the engagement bolt 7 is not loosened.

  A mounting portion 2c for assembling to a percussion instrument stand or the like is formed in the body portion 2 so as to protrude from the body portion 2 (lower side in FIG. 2), and a rod hole 2f into which a rod-like support such as a stand is inserted is formed. Yes. A mechanism for holding the inserted rod is formed in the rod hole 2f, and a handle 8 for driving the mechanism is provided. When the handle is turned to the right, the rod inserted into the rod hole 2f is clamped, and when the handle is turned to the left, the rod is opened.

  A head sensor 21 and a rim sensor 31 are disposed inside the cylinder formed by the head support member 2b on the opposite side of the mounting portion 2c with the central portion of the cylinder forming the body portion 2 interposed therebetween. The head sensor 21 is affixed on the support plate 11 stretched on two pillars erected from the bottom 2g (see FIG. 3) of the body 2, and the rim sensor 31 is affixed to the bottom 2g. It is worn.

FIG. 3 is a plan view showing the electronic percussion instrument 1 when the hoop 4 and the head 5 are removed. In FIG. 3, a stereo jack 9 for outputting an electrical signal detected by each of the head sensor 21 and the rim sensor 31 is provided on the upper left side of the center of the body portion 2.
. The electrical signals detected by the head sensor 21 and the rim sensor 31 are independently output by a stereo plug inserted into the stereo jack.

  FIG. 4 is a cross-sectional view showing a cross section when the electronic percussion instrument 1 is cut along a plane that passes through the axis of the engagement bolt 7 and is perpendicular to the hitting surface 5 a of the head 5. 4A is a plan view showing the position of the cross section of the cross-sectional view shown in FIG. 4B, and FIG. 4B is a cross-sectional view thereof.

  As shown in FIG. 4B, the rim cover 3 is fitted to the upper end of the body portion 2, and the striking surface 5a of the head 5 is disposed at a position lower than the upper end of the rim cover. The head frame 5 b of the head 5 abuts against the hoop body 4 a of the hoop 4, and the hoop 4 is pressed down by engaging the engagement bolt 7 with the female screw 2 e formed on the bottom 2 of the body 2.

  When the head 5 is assembled by the hoop 4 in this way, the upper surface of the head 5 and the upper surface of the hoop 4 are formed to be substantially flush with each other. As a result, the top surface of the head 5 and the top surface of the hoop 4 appear to form a striking surface, so that the player feels that the striking surface is wide and is easy to perform.

  Further, a bolt hole 4b into which the engagement bolt 7 is inserted is formed in the hoop 4 at a position where the circumference is divided into six equal parts, and a bolt head that houses the head of the engagement bolt 7 is located above the bolt hole 4b. Since the storage hole 4 c is formed, the head of the engagement bolt 7 does not protrude from the upper surface of the hoop 4. Therefore, the head of the engaging bolt 7 protrudes from the upper surface of the hoop 4 to prevent the player from feeling the hitting surface narrow.

  As described above, the head 5 is configured by adhering the striking surface member 5a made of a net-like or film-like material to the head frame 5b formed in a substantially annular shape when viewed from the front, and as shown in FIG. By striking the head frame 5b on the outer periphery of the head support member 2b, the striking surface member 5a as a striking surface is stretched on the upper end surface (upper side in FIG. 4) of the body portion 2. The head sensor 21 is in contact with the lower surface (lower side surface in FIG. 4) of the striking surface member 5a.

  Here, when the striking surface is configured by using the striking surface member 5a made of a net-like material, the air resistance of the striking surface can be reduced, so that it is possible to obtain a good striking feeling at the time of striking with a stick or the like. In addition, since the hitting sound is reduced, only the musical sound from the speaker device can be heard by the performer.

  Since the vibration of the striking surface member 5a due to striking propagates only within the striking surface member 5a, the vibration is hardly affected on the body 2. Therefore, the vibration of the striking surface member 5a is not affected by the head. It is detected only by the sensor 21 and is not erroneously detected by the rim sensor 31 described later. Further, the tension of the striking surface member 5a can be arbitrarily adjusted according to the player's preference and performance by appropriately changing the screwing amount of the engagement bolt 7 into the female screw 2e.

  Next, the head sensor 21 and the rim sensor 31 will be described with reference to FIG. Fig.5 (a) is a top view which shows the position of the cross section of sectional drawing shown to (b), FIG.5 (b) is the sectional drawing.

  The head sensor 21 is a sensor device for detecting the vibration of the head 5, and includes a piezoelectric element 22, a cushioning double-sided tape, the piezoelectric element 22, and the like covered with a cushion member 23. The piezoelectric element 22 is a vibration detection sensor that converts vibration such as piezo into an electric signal, and is formed in a substantially disk-like body having an output signal line (not shown). Also, a cushion member 23 and a cushioning double-sided tape, which will be described later, are attached to the upper and lower surfaces of the piezoelectric element 22, respectively.

  The output signal line is connected to the stereo jack 9 (see FIG. 3), and the electrical signal from the piezoelectric element 22 is output to a musical sound device (not shown) via the stereo jack 9.

  The cushioning double-sided tape is a member for attaching the piezoelectric element 22 to the support plate 11 and is configured as a so-called double-sided tape in which an adhesive layer is laminated on the upper and lower surfaces of the cushion layer. This cushioning double-sided tape is formed in a substantially disc shape, and the piezoelectric element 22 is adhered to the support plate 11 by this cushioning double-sided tape.

  The cushion member 23 is a member for transmitting vibrations from the head 5 to the piezoelectric element 22, is formed in an approximately cylindrical shape from an elastic member such as a sponge, and is attached to the piezoelectric element 22. The cushion member 23 is formed as a cylindrical body having a diameter larger than that of the piezoelectric element 22, and is configured such that the upper surface of the cylindrical body abuts on the lower surface of the head 5 (striking surface member 5a).

  The head sensor 21 configured as described above is adhered to the support plate 11 with a cushioning double-sided tape while the upper surface of the cushion member 23 is in contact with the lower surface of the head 5.

  As described above, the rim sensor 31 is a sensor device for detecting the vibration of the outer peripheral portion 2a of the body portion 2. Like the head sensor 21, the rim sensor 31 is a piezoelectric element as a vibration detection sensor, and the piezoelectric element is connected to the bottom 2g. It mainly comprises a cushioning double-sided tape for sticking to. In addition, since the structure of these piezoelectric elements, cushioning double-sided tapes, etc. is the same as that of the case of the head sensor 21, the description is abbreviate | omitted.

  The rim sensor 31 is adhered to the upper surface side of the bottom 2g with a cushioning double-sided tape. The attachment position of the rim sensor 31 is in the vicinity of the head sensor 21, and is a position on the opposite side of the attachment portion 2 c across the center portion of the cylinder forming the body portion 2.

  As described above, in the electronic percussion instrument of the present embodiment, the rim portion formed on the trunk portion 2 does not have a function of applying tension to the head 5, and tension is applied to the head 5 by the hoop 4 which is a separate member. Since it is configured to be imparted, the height from the upper surface of the head 5 at the upper end of the rim portion is always kept constant, and a rim shot performance can be easily performed.

  Further, when the rim portion vibrates due to impact, if the outer periphery of the head 5 is surrounded by the rim portion as in the prior art, the vibration propagates to the head 5 and erroneously detects that the head 5 has been hit. According to the present invention, since the rim portion is not in direct contact with the head 5, there is no erroneous detection as in the prior art.

  As described above, the present invention has been described based on the embodiments, but the present invention is not limited to the above-described embodiments, and various improvements and modifications can be easily made without departing from the spirit of the present invention. It can be guessed.

  For example, in the above-described embodiment, the rim portion is formed by fitting the rubber rim cover 3 into the outer peripheral portion 2a that forms the outer periphery of the trunk portion 2. May be omitted.

1 is an external perspective view of an electronic percussion instrument according to an embodiment of the present invention. It is a disassembled perspective view of an electronic percussion instrument. It is the top view which removed the head and hoop of the electronic percussion instrument. It is sectional drawing in the cross section containing the engagement bolt of an electronic percussion instrument. It is sectional drawing of the sensor part of an electronic percussion instrument.

Explanation of symbols

1 Electronic percussion instrument 2 Torso
2a Outer peripheral part (part of rim part)
2b Head support member 2c Mounting portion 3 Rim cover (a part of the rim portion)
4 Hoop 5 Head 5a Impact member (part of the head)
7 Engagement bolt 21 Head sensor 22 Piezoelectric element 23 Cushion member 31 Rim sensor

Claims (6)

In electronic percussion instruments that detect and output vibration due to impact,
A hollow cylindrical body having a rim portion on the outer periphery;
A head having a flat surface disposed on the inner periphery of the body and below the upper end of the rim portion;
A cylindrical head support member that is in contact with the inner periphery of the lower surface of the head and is disposed inside the cylinder formed by the cylinder;
An annular hoop that surrounds the outer periphery of the head and is arranged on the inner periphery of the barrel to apply tension to the head;
An electronic percussion instrument comprising a head sensor for detecting vibration of the head.   2. The electronic percussion instrument according to claim 1, wherein the upper surface of the hoop is formed substantially flush with the upper surface of the head.   3. The electronic percussion instrument according to claim 1, wherein the hoop is screwed to a plurality of female screws formed on a frame connected to the head support member by a plurality of bolts.   4. The electronic percussion instrument according to claim 3, wherein the hoop has a bolt head accommodation hole for accommodating the head of the bolt so that the head of the bolt does not protrude from the upper surface of the hoop.   The electronic percussion instrument according to any one of claims 1 to 4, wherein the body and the head support member are integrally formed of resin.   The electronic percussion instrument according to any one of claims 1 to 5, further comprising a rim sensor for detecting vibration of the trunk.

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