JPH0234717Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) This invention relates to a sound insulating drum.

(Prior Art) Noise has originally accounted for the largest number of complaints regarding pollution, and the types and sources of noise have become extremely diverse as cities become overcrowded and industrial development progresses. In particular, in recent years, there has been a problem of acoustic pollution during practice performances in rooms without sufficient soundproofing equipment, other than the stage for percussion instruments such as the Jiyaz drum, which reflects Japan's rapidly increasing musical population, mainly young people.

Conventionally, the acoustic noise of various drums with different tonal effects, such as the low-pitched bass drum and the high-pitched tom-toms, has been known to have effects similar to those of the human body, such as impaired hearing, psychological and physiological conditions, and effects on various biological functions. It has a huge negative impact on the living environment and has become a major social problem. However, in the past, there were no appropriate measures to prevent or reduce the noise caused by these various drums, and at most the only way to reduce noise was to put sound-absorbing or sound-insulating materials on buildings, which was not worth the equipment cost. However, most of them were left unchecked as they were not able to produce significant sound deadening or soundproofing effects.

(Technical Issue) Therefore, the technical issue of this invention is to provide an appropriate sound-insulating cover to the drum itself, which is the source of the noise, so that practice performances can be performed in the same way as normal performances, and at the same time effective noise reduction can be achieved. shall be.

(Technical Means) This invention was made in order to solve the above-mentioned technical problem.The following is a detailed description of the embodiments in the drawings. On one outer surface,
For example, a sound absorbing material such as cloth or a foamed resin material with high elasticity and low breathability such as soft urethane foam 6 A soft rubber plate (artificial rubber is preferable) on the outer surface 7
sound insulating cover 5 overlaid by sewing 8
is removably attached. In the case of the bass drum shown in Figs. 1 and 2, the sound insulating covers 5 are attached to the outer surfaces of the heads 2 on both sides, and rubber strings 9 tied at multiple points on the outer periphery are attached to corresponding positions on the end rings 3 on both sides. After passing through holes 10 drilled in each of the holes 10, they are tied to each manual screw type tuning tool 4 and stretched. In the case of the tom-tom drum shown in FIGS. 3 and 4, the sound insulating cover 5 is attached to the outer surface of one (upper) head 2, and each rubber string 9 on the outer periphery is connected to each tuning tool 4.
They are each tied and strung up.

(Effects) As mentioned above, the sound insulating drum of this invention has a sound absorbing material 6, such as cloth or soft urethane foam, on at least one outer surface of the head 2 stretched on both sides of the body 1, and a soft rubber plate 7 on the outer surface. It is made up of stacked sound insulation covers 5, and since the sound insulation covers 5 are soft and have appropriate elasticity, drum practice is no different from normal performance by hitting the head 2 from above the sound insulation covers 5. The performance is light and easy, and the sound-absorbing and silencing effects of the sound-insulating cover 5 have an outstanding effect of effectively preventing and reducing noise.

Particularly in this invention, a sound insulating cover 5 is provided on the outer surface of the head 2 stretched on the body 1, and rubber strings 9 tied at a plurality of locations on the outer periphery of the sound insulating cover 5 are provided with through holes 10 formed at corresponding positions in the end ring 3. Since the sound insulating cover 5 is inserted into the head 2 and stretched so as to be in close contact with the head 2, the sound insulating cover 5 can be brought into close contact with the head 2 by the tension of each rubber string 9, and can always be brought into close contact with the head 2 evenly.
Even if the sound insulation cover 5 is stretched, the return of the drumsticks does not deteriorate, that is, there is almost no change in the movement (return) of the drumsticks whether the sound insulation cover 5 is stretched or not, and the sound insulation cover 5 is stretched. Even if the drum is covered, the drum can be played in a natural state without the sound insulating cover 5, a sufficient sound damping function can be obtained, and the sound insulating cover 5 can be reliably and easily attached and removed.

In addition, a sound insulating cover 5 is stretched over the outer surface of the head 2.
By suppressing the vibrations of the head 2, the acoustic radiation generated by the vibrations can be reduced, and from this point of view as well, there is an excellent effect that can contribute to noise reduction. Furthermore, since the sound insulating cover 5 is removable, it can be removed for stage performances.

[Brief explanation of drawings]

The drawings show an embodiment of this invention; Fig. 1 is a partially cutaway perspective view of a bass drum;
FIG. 2 is a longitudinal sectional view of the same, FIG. 3 is a partially cutaway perspective view of a tom-tom drum, and FIG. 4 is a longitudinal sectional view of the same. 1... body, 2... head, 3... end ring, 4...
Tuning tool, 5... Sound insulation cover, 6... Sound absorbing material, 7...
...Rubber plate, 8... Sewing, 9... Rubber string, 10...
Through hole.

Claims (1)

[Scope of utility model registration request] On the outer surface of at least one of the heads 2 stretched on both sides of the body 1, there is a sound insulating cover 5 with a soft rubber plate 7 superimposed on the outer surface of a soft porous sound absorbing material 6 such as cloth or soft urethane foam. This sound insulating drum is constructed by inserting rubber strings 9 tied at respective points into through holes 10 drilled at corresponding positions of an end ring 3 and removably tensioned so as to come into close contact with a head 2.