JPS6230066Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a support device for a percussion instrument such as a xylophone that uses a pipe-shaped sounding body, and a sound source pipe for a Grottsukenshi peel and tabletop piano that uses a simple action.

Conventionally, when the sound source pipe of a xylophone with free vibration at both ends has a simple structure, the upper and lower parts of the vibration nodes are supported by elastic materials such as sponges. In general, as shown in Figure 1, sound source pipes 1 _1.1 are arranged in parallel.
_2. They were tied in a series with strings 5 passed through the joints K of . In such a support method, when the musical instrument body is swung or tilted back and forth, the sound source pipe 1 moves and vibrations are suppressed, and a simple support device has the disadvantage that the sound source pipe 1 may fall off.

For this purpose, as shown in FIGS. 2A and 2B, a hole 6 is bored at the node K of the sound source pipe 1, and a structure is provided in which the hole 6 is locked with an upright pin 7, and a notch 8 is provided to form a rail-shaped support base 2. A structure in which the sound source pipe is placed in the hole 6 and the notch 8 is also considered, but since the circularity of the pipe is distorted by providing the hole 6 and the notch 8 in the sound source pipe, vibration in the direction of the hole 6 and the notch 8 as shown in Fig. 3 is possible. This has the disadvantage that two tones with greatly different frequencies, one with a frequency '' in the orthogonal direction, are generated at the same time, resulting in a beat sound that is difficult to hear.

This invention was made in view of the above points, and will be explained below with reference to the drawings. FIG. 4 shows an embodiment of this invented device, where 1 is a sound source pipe such as aluminum or iron, and 2 is a support base having a plurality of comb-shaped notches 2c arranged side by side. Reference numeral 3 denotes a frame on which the sound source pipe 1 is placed, and a soft elastic material 4 such as felt or sponge is attached to the upper surface thereof, and the support base 2 is also fixed thereto. The sound source pipe 1 has a required diameter D as shown in Figure 5.
Outer diameter D that is narrowed by uniformly narrowing the vibration node K of the pipe No. 1 into a semicircular or V-shaped groove G
It is formed in 2. On the other hand, as shown in FIG. 6, the support base 2 is formed by providing a required number of pipes in a comb-like shape with notches 2c each having a length l that is narrower than the required diameter D1 of the sound source pipe 1 and wider than the outer diameter D2 of the groove G. This is a support device for a sound source pipe in which the groove G of the sound source pipe 1 is inserted into the notch 2c of the support base 2.

Since the sound source pipe 1 is configured as described above, the sound source pipe 1 is locked by the notch 2c of the support base 2 and the groove G of the sound source pipe 1, so that the support position is regulated and braking in the front and back direction is also performed. Therefore, even if the main body of the musical instrument is swung back and forth or stands up vertically, the sound source pipe 1 will not move or fall out as in the conventional case. In addition, since the sound source pipe 1 has no holes 6 or notches 8 and is narrowed to a uniform groove G with a narrow diameter, the roundness is not distorted and the frequency in the orthogonal direction,
Since there is no change in ′, it has the advantage of not affecting the tone.

In the illustrated example, a sound source pipe support device is shown in which only one section of the sound source pipe is narrowed down and inserted into the support stand, but it is possible to narrow down both sections of the sound source pipe and insert it into two support stands. Of course, this is a good thing.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional xylophone with a part of the sound source pipe omitted, Fig. 2 A and B are perspective views showing other conventional sound source pipe support devices, and Figs. 3 A and B are Fig. 2 4 is a perspective view showing an embodiment of the device of the present invention, FIG. 5 is a sectional view of the sound source pipe of the present invention, and FIG. 6 is a perspective view of the support base of the present invention. be. 1... Sound source pipe, 2... Support stand, 2c... Notch, 3... Underframe, 4... Elastic material, 5... String,
6... hole, 7... standing pin, 8... notch.

Claims (1)

[Scope of utility model registration request] A groove G is formed by uniformly narrowing down the vibration node periphery of the sound source pipe 1 with a required outer diameter D1, and the groove G is narrower than the required outer diameter D1 of the sound source pipe 1.
A supporting device for a sound source pipe, in which a groove G of the sound source pipe 1 is inserted into a support base 2 having a cutout portion 2c having a width wider than an outer diameter D2 of the sound source pipe.