JPH02645Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a musical instrument called a pan flute, which is made by arranging cylinders of different lengths in the order of their lengths.

As shown in Fig. 1, the conventionally known pan flute is made of a cylinder 1 made of bamboo or reed with partition walls like nodes 2, each of which has a different length so that a predetermined scale can be obtained. The set required number of cylinders 1
are arranged in parallel to each other in a predetermined pitch order, and these cylinders 1 are fixed together with adhesive or a splint 3.

In principle, a pan flute has the above-mentioned structure, but in a closed pipe like this, where the joints 2 of a cylinder made of bamboo or reed are used as they are as a partition wall to close the pipe, it is simply a cylinder. Even if a plurality of cylindrical bodies 1 are arranged in an orderly manner based on the position of the nodes 2 visible from the outside of the body 1, these nodes 2
The problem is that when looking at the instrument as a whole, each cylinder 1 cannot be set at an accurate position as a partition wall for resonating at the correct pitch, in other words, the nodes 2 in each cylinder 1 There is a problem in that it is technically difficult to accurately set the depth of the closed pipe by simply using it as is.

For this reason, in the past, when manufacturing a pan flute suitable for mass production, it was necessary to add beeswax 4 to the upper part of the knot 2 and adjust the amount of this beeswax 4, as partially shown in Figure 1. Measures are taken to adjust the pitch.

However, if the process of adjusting the amount of beeswax 4 added to each cylinder 1 in order to obtain an accurate pitch requires a large amount of effort in manufacturing one pan flute. Not only does it require a lot of time and effort, but it is also extremely difficult to mass-produce high-quality, homogeneous products.

The purpose of this project is to solve the above-mentioned problems in manufacturing conventional pan flutes.It is a cylindrical body made of synthetic resin that does not deform to a preset length or diameter. By arranging a predetermined number of cylinders in parallel, and inserting and fixing an outer circumferential wall that can be inserted into the cylinder and a bottom plug formed by closing a bottom plate to the outer circumferential wall at a predetermined partition wall setting position in each cylinder, The present invention is characterized in that a resonance sound suitable for each cylindrical body can be obtained simply and easily.

Next, the pan flute according to the present invention will be explained with reference to the embodiment shown in FIG. 2 and below. FIG. A predetermined number of cylinders 11 each having a diameter are arranged integrally in parallel in a predetermined order.

A locking step 13 for setting the bottom plug 12 at a predetermined position designed in advance is provided on the inner periphery of the end portion 11B of each cylinder 11 on the side opposite to the performance opening 11A. . In this embodiment, this locking step 13 has an inner diameter at the opening inner periphery 14 on the tip end 11B side than the locking step 13.
It is formed by widening to become slightly larger than the inner diameter of one main part.

As the bottom plugs 12 to be locked to the locking steps 13 of the cylindrical body 11, different shapes are prepared in advance as shown in FIGS. 3 to 5.
The basic shape of this bottom plug 12 is the tip opening 14.
It consists of an outer circumferential wall 15 having an outer diameter that can be closely inserted into the inner circumference of the outer circumferential wall 15, and a bottom plate 16 that closes off this outer circumferential wall 15. It is adapted to be inserted into the tip opening 14 of the cylindrical body 11 so as to abut against the stepped portion 13 . FIGS. 3 to 5 show examples of various types of bottom plugs 12 that are preferable for carrying out the present invention. That is, the bottom plug 12A in FIG. 3 is provided so that the bottom plate 16 is on the same surface as the peripheral end 17 at the upper end of the outer peripheral wall 15, and the bottom plug 12B in FIG. It is provided above the peripheral end portion 17. Furthermore, the bottom plug 12C in FIG. 5 is provided such that the bottom plate 16 is located below the peripheral end 17 at the upper end of the outer peripheral wall 15.

If the locking step 13 of the cylinder body 11 is provided at an accurate position to obtain the desired correct pitch as designed, the bottom plate 16 of the bottom plug 12A in FIG. By inserting the cylindrical body 11 into the tip opening 14 so as to be set at the same position as the cylindrical body 11, it is possible to easily obtain the desired correct pitch.

If there is a part of the cylindrical body 11, the locking step 1
3 is molded in a position slightly different from the design, and when the bottom plug 12A shown in FIG. 3 is inserted, the desired correct pitch cannot be obtained, and the pitch is slightly lower than the correct pitch. In such a case, the bottom plug 12 shown in FIG.
Just insert B. In addition, if the pitch of a certain part of the cylinder 11 is shifted somewhat higher than the correct pitch by inserting the bottom plug 12A, the bottom plate 16 may be moved to a position below the locking step 13. Just insert the bottom plug 12C shown in Figure 5.

As described above, in the pan flute according to the present invention, the locking step portion 13 is provided on the inner circumference of the tip inner circumference 11B of each cylinder 11, and the locking step portion 13 is provided on the inner circumference of the tip inner circumference 11B.
A bottom plug 12 consisting of an outer circumferential wall 15 and a bottom plate 16 that closes this outer circumferential wall 15 is disposed on the inner circumference 14 of the opening on the 1B side.
, the peripheral end portion 17 at the upper end of the outer peripheral wall 15 is the locking step portion 13
Since they are inserted so as to abut against each other, by setting the positions of the locking step portions 13 of each cylinder 11 in advance as designed, it is possible to easily and accurately set the pitch in the target cylinder. can be obtained efficiently. In addition, by preparing bottom plugs 12 with different shapes such as bottom plates 16 in different positions, the setting position of the locking step 13 on the cylinder body 11 may be slightly different from the design. Even if this occurs, the position of the bottom plug 12 relative to the cylinder 11, that is, the depth of the closed tube can be adjusted efficiently and reliably, so it has the effect of being extremely convenient for accurately adjusting the pitch.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway plan view showing the structure of a conventionally known pan flute, FIG. 2 is a partially cutaway plan view showing the structure of the pan flute according to the present invention, and FIG.
5 through 5 are sectional views showing embodiments of the shape of the bottom plug attached to the pan flute of the present invention. In the figure, 11: cylindrical body, 12: bottom plug, 13:
Locking step portion, 14: Inner periphery of opening, 15: Outer peripheral wall, 1
6: Bottom plate, 17: Peripheral end.

Claims (1)

[Claims for Utility Model Registration] 1. A bottom plug locking step for setting the bottom plug is provided on the inner periphery of the tip of each of the parallel cylinders, and the locking step is tightly inserted into the inner periphery of the open end on the tip side of the cylinder. A bottom plug consisting of an outer peripheral wall that can be fitted together and a bottom plate that closes the outer peripheral wall is inserted at a position where the peripheral end of the outer peripheral wall is locked by the locking step on the inner periphery of the opening end. A pan flute. 2. The pan flute according to claim 1, wherein the bottom plate of the bottom stopper is provided on the same surface as the peripheral end of the outer peripheral wall that is locked by the locking step. 3. The pan flute according to claim 1, wherein the bottom plate of the bottom stopper is provided above the peripheral end of the outer peripheral wall that is locked by the locking step. 4. The pan flute according to claim 1, wherein the bottom plate of the bottom stopper is provided below the peripheral end of the outer peripheral wall that is locked by the locking step.