JP2011253171A - Small size swinging bowl - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a swinging bowl for which the increase of characteristic frequency is suppressed and the miniaturization is effectively achieved and whose sound well extends and in which fine adjustment of tone color can be performed and which is effectively used to create new tone color.SOLUTION: A small size swinging bowl has a bottom portion and a bowl side portion erecting from the periphery of the bottom portion. The upper side of the bowl side portion is an opening end. The bowl side portion has at least one of a thin portion extending in substantially vertical direction in a band shape, a thick portion and a slit portion.

Description

  The present invention relates to a phosphorus that produces a sound by being struck with a rinsing rod, a striking rod, or the like, and is suitable for adjusting the pitch of the sound or the tone.

It is well known that the height and timbre of the struck sound change depending on the size and material of a doorbell or a funnel used as a funeral tool.
In general, it is known that a relatively low sound with a low frequency is produced as the diameter increases.
In recent years, Buddhist altars are being downsized due to urbanization of the living environment and changes in the view of religion.
Along with this, miniaturization of Buddhist tools is also required, but it is relatively easy to miniaturize Buddhist tools such as so-called three-foot and five-foot, but phosphorus is simply downsized. Doing so would make the percussion sound too high, and it was unacceptable for those who previously liked a gentle and stretchy sound.
In addition, the method of reducing the thickness of phosphorus not only makes it difficult to maintain the strength, but also makes it impossible to obtain an elongated sound.

Patent Document 1 discloses a technique in which a thick-walled portion is formed in an endless belt shape around the entire circumference at a position having a gap from the mouth edge of a phosphorus such as a bowl. However, the pitch of the hitting sound cannot be adjusted sufficiently.
Patent Document 2 discloses a bell tool that enables adjustment of resonance sound composed of a large-diameter bell opening downward on the upper side of a small-diameter bell opening upward. However, the natural vibration itself cannot be reduced. Absent.

JP 2007-61224 A JP 2003-319869 A

  An object of the present invention is to provide an effective means for downsizing while suppressing an increase in the natural frequency, and an effective extension for adjusting a timbre with a long sound and creating a new timbre.

  The small phosphorus according to the present invention has a base portion and a phosphorus side portion erected from the periphery of the base portion, the upper end of the phosphorus side portion is an open end, and the phosphorus side portion is substantially vertical. One or more of a thin part, a thick part, and a slit part extending in a direction strip shape are provided.

Here, the base portion of phosphorus means a portion to be placed on a phosphorus stand, a phosphorus group or the like in the case of a placement type phosphorus, and a portion to be a suspension base in the case of a suspension type phosphorus.
The shape of the base portion may be a shape close to a planar shape or a convex shape close to a spherical surface, and is not particularly limited.
If the bottom surface of the base portion is flat, the mounting stability is excellent. If the bottom surface is curved, when phosphorus is placed and hit, the effect that the phosphorus swings left and right and back and forth is produced.
If the inner surface of the base is flat, the boundary between the root of the phosphorus side and the base is clear, but if this inner surface is a curved surface, the boundary between the root of the phosphorus side and the base is smooth.
Further, the phosphorus side portion may be erected in a bowl shape from the base portion, or may be erected in a cylindrical shape or a spherical shape.
Extending any one of the thin part, thick part, and slit part into a substantially vertical belt-like shape on the phosphorus side means that when the base part is placed, the band is formed toward the upper opening end along the phosphorus side part. Means having.
Here, the band shape means that the vertical direction is relatively narrower and longer than the horizontal direction, and does not necessarily have to be linear in the vertical direction, and has a bent portion in the horizontal direction partially or entirely. It may be curved.
The thin-walled portion refers to a portion that is thinner in a strip shape than the other general thicknesses on the phosphorus side portion, and the thick-walled portion refers to a portion that is thicker in a strip-like shape than the general thickness.
Moreover, a slit part means having a notch part penetrated in the inside and outside direction of the phosphorus side part.
Furthermore, the thin part, the thick part, and the slit part may extend continuously from the base part side of the phosphorus side part to the opening end.
As described above, when one or more of the thin part, the thick part, and the slit part are provided and are connected to the opening end of phosphorus, the vibration of the phosphorus opening edge is more greatly affected.
In particular, the fact that the upper end of the slit part is connected to the opening end of the phosphorus side means that the upper end of the slit part is notched so that it opens as it is, and the phosphorus side part divided by the slit part. Each act as an oscillating end element.

In the phosphorus according to the present invention, the purpose is to lower the frequency of the primary mode, which is also referred to as a fundamental mode, in addition to the purpose of obtaining a sound that extends and a tone that changes slightly. It is preferable to have a plurality of portions, thick-walled portions, and slit portions so as to be point-symmetric about the vertical axis passing through the center portion of the base portion. Alternatively, the number may be 2 or an integer multiple of 4.
If there is symmetry, the resonance will be high and the higher order vibration modes will also be changed.
Also, it has a base portion and a phosphorus side portion erected from the periphery of the base portion, and the upper end of the phosphorus side portion is an open end, and the phosphorus side portion is a through-hole for adjusting the hammering sound. May be provided so as to be point-symmetric about a vertical axis passing through the center of the base.
The shape of the phosphorus side portion may be a so-called mirror ball having a polyhedral shape in addition to the curved shape.

In the phosphorus according to the present invention, when expressed by the circumscribed circle diameter around the central axis of the phosphorus side portion, the frequency of the primary mode is suppressed to 2,200 Hz or less even when the maximum circumscribed circle diameter is 62 mm or less. Can do.
In particular, in the case of phosphorus having a plurality of slits cut out to the opening end of phosphorus, even if the maximum circumscribed circle diameter is 56 mm or less and 42 mm or less, the frequency of the primary mode is suppressed to 2,200 Hz or less. Can do.
As the diameter of the maximum circumscribed circle around the central axis of the phosphorus side decreases, the height of the phosphorus may be reduced. When formed into bowl-shaped phosphorus, the height of the phosphorus is set to the maximum of the phosphorus side. It should be equal to or less than the diameter of the circumscribed circle.
In addition, the sound generated inside due to the diffraction effect of the sound leaking from the slit portion spreads outside as a whole, and a pleasing timbre appears.
The notch width and length (depth) of the slit portion also affect the pitch and tone color, and the length of the slit portion is preferably about 1/5 to 2/3 of the height of the phosphorus side portion.
Further, the tone color and the added high sound component also change depending on the shape of the divided end element.
Accordingly, the tone color can be adjusted by extending or bending the upper end portion of the divided end element and the open end side so as to spread outward.
In this case, each end element is preferably deformed so as to be point-symmetric about a vertical axis passing through the center of the base.
Providing a plurality of thin-walled parts or slit parts point-symmetrically around the vertical axis passing through the center of the base part not only lowers the frequency of the primary mode, but also emphasizes this fundamental sound. The tone will grow and the tone will remain strong.
On the other hand, it is possible to suppress the increase in the frequency of the primary mode as a whole while improving the strength by making the whole phosphorus thin and partially forming a thick part in the vertical direction.
The phosphorus according to the present invention has an effect of suppressing the increase in the frequency due to the miniaturization, and the thickness of the phosphorus side portion and the base portion also affects the frequency, and the thickness is preferably about 1 mm to 4 mm.

(A) shows the perspective view of the example of the phosphorus which the upper part of the slit opened as Example 1, (b) shows a front view. In phosphorus of Example 1, (a) shows a top view and (b) shows a bottom view. The external appearance perspective view of the phosphorus which concerns on Example 2 is shown. The phosphorus which concerns on Example 3 is shown, (a) is an external appearance perspective view, (b) shows sectional drawing of a slit part. The phosphorus which concerns on Example 4 is shown, (a) shows a perspective view, (b) shows sectional drawing of thin part vicinity. The phosphorus which concerns on Example 5 is shown, (a) shows a perspective view, (b) shows sectional drawing of a through-hole vicinity. The phosphorus which concerns on Example 6 is shown, (a) shows a perspective view, (b) shows sectional drawing of the semicircular spherical thin part vicinity. The phosphorus which concerns on Example 7 is shown, (a) shows the example which sprinkled the small diameter hole between the large diameter holes, (b) shows the example which has arrange | positioned the hole symmetrically around the central axis. 8 shows phosphorus according to Example 8, (a) shows an example in which a semicircular cutout recess is formed on the opening end face of phosphorus, and (b) shows an example in which the shape of the opening end is made into a petal-like uneven shape. Show. The frequency measurement chart of sample A is shown. The frequency measurement chart of sample B is shown. The frequency measurement chart of sample C is shown.

  Embodiments of phosphorus according to the present invention will be described below with reference to the drawings, but the present invention is not limited thereto.

The phosphorus 10 shown in FIG. 1 shows an example in which the whole is formed in a bowl shape close to a substantially spherical shape.
The phosphorus 10 has a phosphorus side portion 12 erected from the periphery of the base portion 11, and the phosphorus side portion 12 has a plurality of slit portions 14 cut out in a slit shape from the opening end 13 of the phosphorus toward the base portion 11 side.
In this embodiment, a plurality of slit portions 14 are formed so as to be point-symmetric about a vertical axis 20 passing through the center of the base portion 11.
The number of the slit portions 14 is preferably an integer multiple of 2, particularly an integer multiple of 4. The first embodiment is an example having eight.
By appropriately setting the length (depth) dimension h, the opening end width dimension d ₁ and the base width dimension d ₀ of the slit part, the frequency of the plurality of end elements 15 divided by the slit part 14 changes. In addition to the fact that the frequency of the primary mode of the entire phosphorus side portion is reduced, the vibration of the end element 15 is taken into consideration, so that there is an extension and a pleasing timbre is obtained.
The depth of the slits 14, phosphorus height of 1 / 5-2 / 3 range side is preferred, in the present embodiment is set to about 1/3, the open end width than the base width d ₀ shape front view of the end element 15 by reducing the dimensions d _1, which is an example which is set to be substantially rectangular.

The material of phosphorus is preferably a metal, and copper alloys such as bronze, brass and silgin are particularly preferred because they are less likely to rust than iron.
As a result of trial manufacture and evaluation of a brass phosphorus having the shape shown in Example 1 and a circumscribed circle having a maximum diameter around the axis of the phosphorus side of 40 mm, the frequency of the primary mode was about 2,000 Hz.

FIG. 3 shows the second embodiment, in which the number of slits is six, the slit portion 14a is cut out so that d ₀ = d ₁ and the end element 15a has a substantially trapezoidal shape when viewed from the front. It is.
Since the end element 15a is separated by the slit portion 14a, the opening end side can be made partially vertical or bent outward so that the petals open.

  The example of phosphorus shown in FIG. 4 is an example in which four elongated slits 16 are formed along the phosphorus side so that the open end 13 of phosphorus is connected, and FIG. A cross-sectional view is shown.

The example of phosphorus shown in FIG. 5 is an example in which a thin strip portion 17 in the vertical direction is formed outside the phosphorus side portion 12.
FIG. 5B shows a cross-sectional view of the thin portion 17.

  The phosphorus shown in FIG. 6 can be changed in design because light leaks from the through hole 18 in which a plurality of through holes 18 are formed in the phosphorus side portion 12.

  The example shown in FIG. 7 shows an example in which a plurality of circular recesses 19 are studded on the phosphorus side portion 12.

  The example of phosphorus shown in FIG. 8 shows an example in which through holes 18a, 18b, and 18c are provided so as to be symmetric around a vertical axis, and (a) shows an example in which large and small through holes 18a and 18b are formed.

  The example shown in FIG. 9 is an example in which a concave portion 13a or a concave-convex shape 13b for forming a petal shape is formed at the opening end 13 of phosphorus, and this also changes the tone of phosphorus.

Next, the frequency of the hitting sound was measured and compared.
Sample A: 8 shape slits as shown in FIG. 1, maximum shaft diameter of 38 mm, phosphorus side meat
Thickness 2 mm, slit width d ₀ = d ₁ = 3 mm, slit depth h = 10 mm,
Total height of phosphorus about 28mm
Sample B: Same shape as sample A, with a phosphorus side wall thickness of 1 mm. Sample C: Same outer shape and thickness as sample A, with no slit. Measurement of sample A, B, C frequency The charts are shown in FIGS. 10, 11 and 12, respectively.
As a result, the spherical bowl-shaped sample C without a slit portion has a primary mode frequency of about 5,350 Hz, while the sample A with a slit portion has a primary mode frequency of about 2,180 Hz. In addition, the frequency was significantly reduced, and a difference was also observed in the expression of the higher-order mode frequency above the secondary mode.
Further, the thin sample B had a frequency of the primary mode of about 1,120 Hz, which was even smaller.

10 Phosphorus 11 Base 12 Phosphorus side 13 Open end 14 Slit 15 End element 16 Slit 20 Vertical axis

Claims (6)

A base portion and a phosphorus side portion erected from the periphery of the base portion;
The upper end of the phosphorus side portion is an open end, and the phosphorus side portion has any one or more of a thin portion, a thick portion, and a slit portion extended in a substantially vertical band shape. Rin.   The phosphorus according to claim 1, wherein the thin portion, the thick portion, and the slit portion continuously extend from the base portion side of the phosphorus side portion to the opening end.   3. The phosphorus according to claim 1, wherein the thin portion, the thick portion, and the slit portion have a plurality of points so as to be point-symmetric about a vertical axis passing through the center portion of the base portion.   4. The phosphorus according to claim 1, wherein the plurality of thin-walled portions, thick-walled portions, and slit portions have an integer multiple of four. A base portion and a phosphorus side portion erected from the periphery of the base portion;
The upper end of the phosphorus side portion is an open end, and the phosphorus side portion has a plurality of through-holes for adjusting the hitting sound so as to be point-symmetric about the vertical axis passing through the center portion of the base portion. Phosphors characterized by that.   6. The phosphorus according to claim 1, wherein the circumscribed circle diameter around the central axis of the phosphorus side portion is 62 mm or less, and the frequency of the primary mode is 2,200 Hz or less.