JPH0673796U - Japanese drum - Google Patents

Abstract

(57) [Summary] [Purpose] To provide large and small Japanese drums that are not restricted by log size, dry storage, etc. [Structure] A cylindrical body 1 made of a metal plate, a damping material 6 attached to an inner peripheral surface of the body 1, end rings 10 attached to both ends of the body 1, and an end ring 10. Stretched leather 15
And consist of.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a Japanese drum made of a metal body.

[0002]

[Prior art]

 Traditionally, Japanese drums used for festivals and folk performing arts are made by hollowing out the logs such as zelkova and using a hollow drum. Was manufactured with a body diameter of 3 m or less.

[0003]

[Problems to be solved by the device]

 However, in such a Japanese drum, it is difficult to obtain a large diameter log, so the diameter of the body is limited to about 3 m, and it was not possible to produce a larger Japanese drum. . Further, even a small-diameter log is extremely expensive because it takes a long time to dry and store it, and it takes a lot of time to cut the body.

The present invention has been made in view of the above, and an object thereof is to provide a Japanese drum that is not restricted by the size of a log, dry storage, and the like.

[0005]

[Means for Solving the Problems]

 This invention has been made to achieve the above-mentioned object. A cylindrical body made of a metal plate, a damping material attached to the inner peripheral surface of the body, and attached to both ends of the body, respectively. It is a Japanese drum that is composed of an end ring and a leather stretched over the end ring.

[0006]

[Action]

 This invention is constructed as described above, and the barrel is formed of a metal plate into a cylindrical shape having an arbitrary diameter and length. The damping material absorbs the resonance energy of the body and adjusts the reflection of sound waves inside the body to improve the acoustic effect of the body.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

The Japanese drum of the present invention comprises a cylindrical body 1 made of a metal plate, a damping material 6 attached to the inner peripheral surface of the body 1, and ends attached to both ends of the body 1. The rings 10 and 10 and the skin 15 stretched over the end ring 10 are mainly configured.

In the embodiment, the body 1 is made of a stainless steel plate, and the main body 2 is formed into a beer barrel-shaped cylinder, and both ends of the main body 2 have locking step portions 3 for mounting the end rings 10 and 10. , 3 are formed.

The main body 2 is composed of a plurality of body pieces 2a whose outer peripheral surface is divided into a predetermined shape, and the plurality of body pieces 2a are combined and welded at a welding portion 5a to form a cylindrical shape. There is. The outer peripheral surface of the main body 2 is provided with a woodgrain pattern.

The locking step portion 3 is formed of an annular member having an L-shaped cross section having a tubular portion having a diameter smaller than that of the outer peripheral surface of the main body portion 2, and is welded to the opening portions at both ends of the main body portion 2 by the welding portions 5b. There is. Moreover, the cylindrical portion is provided with a ridge 4 protruding in the radial direction.

The damping material 6 is composed of rubber plates 7a, 7b, 7c made of a soft rubber plate such as NBR, and wood pieces 8a, 8b made of a plate material such as Kusunoki.

The rubber plate 7a is composed of a plurality of pieces and is adhered to the inner peripheral wall of the main body 2 with an adhesive. The rubber plates 7b and 7c are adhered to the inside of the locking step portion 3 with an adhesive. The wood piece 8a is composed of a plurality of pieces, and is adhered to the inner peripheral side of the above-mentioned attached rubber plate 7a with an adhesive. The wood piece 8a is adhered to the inner peripheral side of the adhered rubber plate 7c with an adhesive. As a result, the antivibration material 6 including the rubber plates 7a, 7b, 7c and the wood pieces 8a, 8b is attached to the inner peripheral surfaces of the main body portion 2 and the locking step portion 3 of the body 1.

The end ring 10 is made of wood such as Kusunoki, and is formed in an annular shape by four end ring pieces 10a. The inner peripheral surface of the end ring 10 is provided with a locking groove 11 that fits with the protrusion 4 of the engagement step portion 3, and further, the locking step portion is provided on the inner peripheral side of the outer end portion. 3, end portions 12 are formed so as to cover the outer ends of the rubber plate 7c and the wood piece 8b. The end ring 10 has the engaging groove 11 fitted to the protrusion 4 of the locking step portion 3, and is fixed to the locking step portion 3 by adhesion or bolts.

A skin 15 is stretched on the outer peripheral side of the end ring 10 and fixed by a large number of tacks 19.

The wadaiko thus constructed absorbs the resonance of the body 1 with the rubber pieces 7a to 7c and the adhesive, and attenuates the resonance sound peculiar to the metal cylinder. Adjust the reflection of the sound wave of.

According to this Japanese drum, it is possible to form the body 1 having a diameter of 4 m and a length of 5 m. Therefore, it is possible to form a large-sized Japanese taiko drum that emits extremely low bass sounds and has a sound effect similar to the large-sized Japanese drum drum of a wooden body.

The present invention is not limited to the above-mentioned embodiment, and for example, the metal plate forming the body may be aluminum or copper. Further, the body of the body may be formed of a composite steel plate having a vibration damping function, which is composed of a steel plate and a rubber layer. Further, the outer peripheral surface of the body may be a polished finish of a metal plate.

Further, the vibration damping material may be formed of a thick polymer elastic layer or a foamed plastic plate. Further, in order to suppress the resonance of the metal cylinder, a pillar extending in the diameter direction may be provided inside the cylinder.

[0020]

[Effect of device]

 As described above, according to the Japanese drum of the present invention, it is possible to produce a large-sized Japanese drum which has never been used before, without being restricted by the size of the log forming the body.

Moreover, regardless of the diameter of the drum, it is possible to obtain the Japanese drum with excellent acoustic effect by adjusting the resonance and reflection of the metal drum.

Further, unlike the conventional log-made drum, it does not require a period for drying and storing the log, and the time-consuming hollowing of the cylinder can be omitted to produce the Japanese drum immediately. Play.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is an enlarged sectional view of an end ring portion.

[Explanation of symbols]

 1 body 6 damping material 10 end ring 15 skin

Claims (1)

[Scope of utility model registration request] 1. A cylindrical body made of a metal plate, a damping material attached to an inner peripheral surface of the body, end rings attached to both ends of the body, and a tension member attached to the end ring. Wadaiko, which is characterized by being made of leather and