JPH0944147A - Drum - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain drumming sounds and special sound effect similar to those of other drums without altering the structure of the drum itself. SOLUTION: A cavity shaper 5 consisting of a cylindrical body is arranged in a barrel body 2 and both its end surfaces are brought into contact with the internal surfaces of drum heads 3A and 3B on the top side and reverse side. The external diameter R2 of the cavity shaper 5 is set smaller (>=2mm) than the internal diameter R1 of the drum 1 and the height h2 is set larger (about 1-30mm) than the height h1 of the drum 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum suitable for application to a bass drum, a snare drum, a marching drum, a floor tom, and the like.

[0002]

2. Description of the Related Art Generally, a drum such as a bass drum, a snare drum, a marching drum, and a tom is made of wood, fiber reinforced plastic (FRP), metal, etc. A drum head made of resin film (eg, polyester resin, polycarbonate resin, etc.) is supported and tensioned with uniform tension, and the air column enclosed between these heads acts as a vibration transmission medium to generate a drum sound. When one of the drum heads is hit, the air column transmits the vibration to the other drum head, and when this causes the other drum head to vibrate, the air column transmits the vibration to the one drum head. It is configured to cause both drum heads to repeatedly vibrate. For this reason, it is required for the body to maintain a stable shape, not to be deformed due to climatic conditions, drum head tension, etc., to have less irregular articulation, and to prevent self-vibration or self-absorption. Sound quality is different. That is, a soft sounding sound is obtained when made of wood, and a light and bright sounding sound is obtained when made of metal. The tone color and pitch of the drum can be changed by changing the tension of the drum head. Furthermore, this kind of drum changes the tone by changing the vibration state of the drum head by selectively touching the drum head with a sound ray (snappy) or felt pad (mute) as a percussion instrument effector to change the timbre and special sound. I am trying to get the effect (example: Jikkou 5)
7-25266, JP-B-57-54138, etc.). When the snappy is used, a special acoustic effect called a so-called tabling effect is obtained, which transmits the vibration of the drum head to the snappy to bring about a light tone such as a flip sound peculiar to the musical instrument. On the other hand, when the mute is used, it is possible to stop the weakening of the tapping sound and the reverberation. As described above, the conventional drum has a specific timbre depending on its type (size), material used, and the like, and the timbre is changed by selectively bringing the snappy or mute into contact with the drum head. .

[0003]

As described above, this type of drum has a unique tone color depending on the type, material used, etc., and when a new tone color is to be obtained,
It is expected that the drum itself will be redesigned and that the manufacturing cost will be high. Therefore, as a method of solving such a problem, by using an effector without changing the drum itself, it is possible to obtain the same drum sound or special sound effect as other drums even if the drum is small or large. There is a demand for the development of a drum that can be done.

The present invention has been made in view of the above-mentioned problems and demands of the related art. The object of the present invention is to facilitate new drum sounds or attractive special sound effects without changing the structure of the drum itself. It is to provide a drum that can be obtained.

[0005]

In order to achieve the above object, according to the present invention, in a drum in which a drum head is stretched on each open end surface of a body, the vibration state of the drum head is changed in the body. It is characterized in that a cavity shaper made of a cylindrical body whose both ends are open is provided for extending or shortening the reverberation time of a tapping sound and changing the tone color. Further, in the present invention, the cavity shaper is formed in a tubular body, and the outer diameter is smaller than the inner diameter of the drum, the length is slightly higher than the height of the drum, and both end surfaces are in close contact with the drum head. . Furthermore, the present invention is characterized in that the cavity shaper is made of wood, metal, plastic, ceramics or a composite material thereof.

In the present invention, different tone colors can be obtained by changing the shape and material of the cavity shaper.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail based on the embodiments shown in the drawings. FIG. 1 is a partially cutaway front view showing an embodiment of a drum according to the present invention.
In the figure, the present embodiment shows a case where it is applied to a snare drum. The drum 1 is a cylinder body 2 formed of wood, FRP, metal, ceramics or the like in a cylindrical shape, and natural leather and resin films (eg, polyester resin, polycarbonate) stretched at openings at both ends of the cylinder body 2. Two drum heads 3 (3A, 3B) made of resin, etc.
And a head support tensioning means 4 for supporting and tensioning the drum head 3 with a uniform tension, a cavity shaper 5 as a percussion instrument effector arranged in the body 2, and the like.

The head support tensioning means 4 holds the peripheral portion of the drum head 3 and has an annular head frame 7 slidably fitted on the outer peripheral surface of the body 2, and the outer peripheral surface of the body 2 as well. An annular tightening frame 8 which is fitted to the head frame 7 and presses the head frame 7,
It is composed of a plurality of lugs 9 fixed to the outer peripheral surface of the body 2 and a plurality of bolts 10 for connecting the tightening frame 8 to each lug 9, and the tightening frame 8 is rotated by rotating the bolts 10. When it is moved along the outer peripheral surface of the body 2, the tightening frame 8
The pressing force of the head frame 7 on the head frame 7 changes, whereby the tension of the drum head 3, that is, the tone color of the drum is adjusted.

The cavity shaper 5 is formed into a cylindrical body whose both ends are open, is disposed in the body center 2 substantially coaxially therewith, and has both end faces on the respective drum heads 3A, 3A.
It is closely attached to the inner surface of B. For this reason, the air column in the body 2 is divided into an outer air column between the body 2 and the cavity shaper 5 and an inner air column in the cavity shaper 5. The outer diameter R ₂ of the cavity shaper 5 is the same over the entire length and is set smaller than the inner diameter R ₁ of the drum 1 (R ₁ > R ₂ and smaller than 2 mm), and the height h ₂ is the height of the drum 1. It is set to be larger than h ₁ (in h _1> h _2, about 1mm~60mm). Therefore, the central portions of the drum heads 3A and 3B are bulged so as to be convex outward. The opening at both ends of the center hole 11 of the cavity shaper 5 is formed with a tapered hole 13 whose diameter decreases toward the center.

Here, the shape of the cavity shaper 5 is not limited to the inner shape and the outer shape which are cylindrical, and various shapes are possible, for example, as shown in FIG. May have a drum shape and a cylindrical outer shape (a), or may have a drum shape with both inner and outer shapes (b).

As a material of such a cavity shaper 5, a composite material such as wood, metal (aluminum, iron, etc.), plastic, ceramics or FRP, fiber reinforced metal, etc. is used.

In the snare drum 1 having such a structure, since the cavity shaper 5 is incorporated in the body 2, the cavity shaper 5 is struck when one drum head, for example, the front side drum head 3A is hit. It is possible to obtain a drum sound with a tone color different from that of a normal snare drum that is not provided. In this case, the tone color is different when the outer peripheral portion and the inner peripheral portion of the drum head 3A are hit with respect to the cavity shaper 5. In the case of the outer peripheral part,
Among them, the outer peripheral edge forms an annular film supported by the cavity shaper 5 and the body 2 and its vibration is
Is transmitted to the outer peripheral portion of the back side drum head 3B via the outer air column between the cavity shaper 5 and the cavity shaper 5. On the other hand, in the case of the inner peripheral portion, the outer periphery thereof forms a disk-shaped film supported by the cavity shaper 5, and its vibration is transmitted through the inner air column in the cavity shaper 5 to the inner periphery of the back side drum head 3B. Transmitted to the part.

Further, since the cavity shaper 5 is incorporated, a rim shot sound having a tone quality different from that of a normal snare drum can be obtained, and a new rim shot sound can be obtained. Furthermore, it is possible to change the timbre by the material and the internal shape of the cavity shaper 5 itself.

When such a drum 1 is used as a normal snare drum, one of the drum heads is removed, the cavity shaper 5 is taken out from the body 2 of the body, and the drum head is stretched again with a predetermined tension. do it.

Although the present embodiment has been described as applied to a snare drum, the present invention is not limited to this, and is applied to other drums such as a tenor tom, floor tom, bass drum, etc. Of course, you can do that.

[0016]

As described above, in the drum according to the present invention, the cavity shaper made of a cylindrical body having both ends open is arranged as the percussion instrument effector in the body of the drum, and both end surfaces thereof are brought into contact with the respective drum heads. It is possible to obtain new timbre drum sounds and rim shot sounds that could not be tested with a normal drum without a cavity shaper. Also, since the drum itself does not need to be changed, the structure is simple and it can be applied to existing drums. Also, by selecting a cavity shaper with different material, shape, etc., the sound unique to other drums can be selected. It is possible to obtain a sound close to.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a drum according to the present invention.

2A and 2B are views showing another embodiment of a cavity shaper, respectively.

[Explanation of symbols]

1 ... snare drum, 2 ... trunk body, 3 ... drum head, 4
… Head support tension mechanism, 5… Cavity shaper, 7
... head frame, 8 ... tightening frame, 9 ... lug, 10 ... bolt.

Claims (3)

[Claims] 1. A drum in which a drum head is stretched on each open end surface of a body, wherein a cavity shaper made of a cylindrical body with both ends open is provided in the body. 2. The drum according to claim 1, wherein an outer diameter of the cavity shaper is smaller than an inner diameter of the drum, a length thereof is higher than a height of the drum, and both end surfaces are in close contact with a drum head. 3. The drum according to claim 1, wherein the cavity shaper is made of wood, metal, plastic, ceramics or a composite material thereof.