Percussion instruments

Abstract

In percussion instruments, this makes it possible to generate a wider variety of sounds during performance. [Solution] The percussion instrument 10 has 12 plate-like members 110[1]~110[10], 120, 130, each with a regular pentagonal shape, which are assembled at positions corresponding to each face of a regular dodecahedron. Of the 12 plate-like members 110[1]~110[10], 120, 130 that make up the percussion instrument 10, at least one plate-like member 130 is provided with an opening that penetrates in the thickness direction.

Description

Technical Field

[0001] This invention relates to percussion instruments.

Background Art

[0002] As a kind of percussion instrument that generates sound by being struck, there is known a cajón that strikes a striking surface provided on the side of a hollow box to generate a sound (striking sound), and the generated striking sound resonates inside the box and the resonating sound is emitted as a performance sound. The performance sound emitted from this cajón, that is, the performance sound generated by the cajón, changes depending on the striking sound generated when the striking surface is struck. However, since the striking sound is determined by the size of the striking surface and the like, it is impossible to adjust the performance sound, and it is difficult to generate a performance sound that matches the performer's wishes.

[0003] Therefore, in order to adjust the performance sound generated by a percussion instrument such as a cajón, it has been proposed to directly contact the free end of a string provided inside the striking surface with the striking surface and change the contact state between the string and the striking surface (see, for example, Patent Document 1). Specifically, Patent Document 1 describes that, in accordance with the rotation of an adjustment shaft, a string support member that supports a string is rotated via a rotation axis parallel to the striking surface, thereby changing the contact state between the string and the striking surface and adjusting the generated sound (performance sound).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, while the percussion instrument described in Patent Document 1 allows for adjustment of the sound produced by changing the contact state between the strings and the striking surface, it is not possible to adjust the sound during performance. Therefore, if a performer wishes to produce a different sound during a performance, it is not possible to produce a sound that matches the performer's wishes.

[0006] This invention was made to solve the aforementioned conventional problems and aims to enable the generation of a wider variety of sounds during performance. [Means for solving the problem]

[0007] To achieve at least some of the above objectives, the present invention can be realized in the following forms or applications.

[0008] [Application Example 1] A percussion instrument comprising 12 plate-like members, each having a regular pentagonal shape, assembled at positions corresponding to each face of a regular dodecahedron, wherein at least one of the 12 plate-like members is provided with an opening that penetrates through in the thickness direction.

[0009] According to this application example, it is possible to generate a sound from each of the 12 plate-like members used for playing (percussion plates). Therefore, by appropriately changing the configuration of each percussion plate, it becomes possible to generate a variety of sounds during performance.

[0010] [Application Example 2] A percussion instrument according to Application Example 1, further comprising a frame to which the 12 plate-like members are assembled, wherein the frame is configured to form a regular pentagonal frame with a flat side on which the 12 plate-like members are assembled.

[0011] According to this application example, a percussion instrument can be created by assembling 12 plate-like members onto a frame, thus making the manufacture of percussion instruments easier.

[0012] [Application Example 3] A percussion instrument according to Application Example 2, wherein the frame has 30 frame members, each positioned at a location corresponding to each edge of the regular dodecahedron, and is constructed by joining adjacent frame members among the 30 frame members so that they are in close contact at a location corresponding to a vertex of the regular dodecahedron, and each of the frame members has a first assembly surface formed on the first assembly side to which a first plate-like member among the 12 plate-like members is assembled, a second assembly surface to which a second plate-like member adjacent to the first plate-like member is assembled, straddling an edge corresponding to an edge of the regular dodecahedron on the frame member, and four end faces perpendicular to the first and second assembly surfaces, the angle between the first assembly surface and the second assembly surface is set to the dihedral angle of the regular dodecahedron, and the angle between the edge and each of the four end faces is set to 1 / 2 of the interior angle of a regular pentagon.

[0013] According to this application example, since the frame can be formed using frame members of the same shape, the manufacture of percussion instruments using frames becomes easier.

[0014] [Application Example 4] A percussion instrument according to Application Example 3, wherein the frame member is composed of two rod-shaped members formed in such a way that the frame member is cut by a plane that includes the ridge line of the frame member and divides the angle between the first and second assembly surfaces at an equal angle.

[0015] According to this application example, the rod-shaped members that constitute the frame can be formed more easily, thus further simplifying the manufacture of percussion instruments using a frame.

[0016] [Application Example 5] A percussion instrument according to any one of Application Examples 2 to 4, wherein each of the 12 plate-shaped members has an assembly hole penetrating in the thickness direction, and the 12 plate-shaped members are assembled to the frame using screws passed through the assembly holes.

[0017] According to this application example, since the plate-shaped members are assembled to the frame using screws, the configuration of the plate-shaped members used in the percussion instrument can be changed more easily.

[0018] [Application Example 6] A percussion instrument according to any one of Application Examples 2 to 4, further comprising a tuning member that contacts a plate-shaped member provided without the opening among the 12 plate-shaped members and changes the striking sound of the plate-shaped member, and a mounting member that holds the tuning member, wherein the tuner is attached to the frame by attaching the mounting member to the frame so that the tuning member faces the plate-shaped member.

[0019] According to this application example, it is possible to generate a unique striking sound caused by the contact between the tuning member and the plate-shaped member. [Brief Description of the Drawings]

[0020] [Figure 1] An external perspective view showing an outline of a percussion instrument as a first embodiment. [Figure 2] An explanatory diagram showing the configuration of a plate-shaped member constituting a percussion instrument body. [Figure 3] An explanatory diagram showing an assembly mode of a plate-shaped member. [Figure 4] An explanatory diagram showing the configuration of a frame member. [Figure 5] An external perspective view showing an outline of a percussion instrument as a second embodiment. [Figure 6] A plan view showing the appearance of the percussion instrument of the first embodiment. [Figure 7] A bottom view showing the appearance of the percussion instrument of the first embodiment. [Figure 8] A front view showing the appearance of the percussion instrument of the first embodiment. [Figure 9] A rear view showing the external appearance of the percussion instrument according to the first embodiment. [Figure 10] A left side view showing the appearance of the percussion instrument according to the first embodiment. [Figure 11] A right side view showing the appearance of the percussion instrument according to the first embodiment. [Figure 12] Cross-sectional view of the percussion instrument according to the first embodiment. [Figure 13] A reference perspective view showing the transparent part of the percussion instrument according to the first embodiment. [Modes for carrying out the invention]

[0021] Hereinafter, embodiments for carrying out the present invention will be described in the following order. A. First Embodiment: A1. Overview of percussion instruments: A2. Structure of the plate-like member: A3. Assembly method of plate-shaped members: A4. Frame component configuration: B. Second Embodiment: C. Appearance of percussion instruments: D. Variations:

[0022] A. First Embodiment: A1. Overview of percussion instruments: Figure 1 is an external perspective view showing a schematic of the percussion instrument 10 as a first embodiment. Figures 1(a) and 1(b) show the percussion instrument 10 viewed from opposite viewing directions. In Figure 1 and other figures, the X and Y directions represent two orthogonal horizontal directions as appropriate, and the Z direction represents the vertically upward direction. Also, the shaded members represent transparent members. Therefore, in Figure 1(b), the rear part of the said member is visible in the viewing direction.

[0023] As shown in Figures 1(a) and 1(b), the percussion instrument 10 has a percussion instrument body 11 and five leg members 12. The percussion instrument body 11 is constructed by assembling twelve plate-like members 110[1]~110

[10] , 120, 130, each having a regular pentagonal shape, at positions corresponding to each face of a regular dodecahedron. Here, the outer shape of a plate-like member refers to the shape of a convex planar figure that encloses the main face of the plate-like member.

[0024] As described above, the percussion instrument body 11 is constructed by assembling 12 plate-like members 110[1]~110

[10] ,120,130, each having a regular pentagonal shape, at positions corresponding to each face of a regular dodecahedron, thus exhibiting a regular dodecahedron shape overall. The specific configuration of the plate-like members 110[1]~110

[10] ,120,130, and the manner in which they are assembled will be described later.

[0025] The leg members 12 are attached to the percussion instrument body 11 near the vertices of the regular pentagon that forms the outer shape of the plate-shaped member 110

[10] located on the vertically downward side (-Z direction side). The leg members 12 can be attached to the plate-shaped member 110

[10] by adhesive bonding or by screwing with wood screws, etc. The leg members 12 are made of rubber or soft resin, and prevent the percussion instrument 10 from sliding when placed on the floor.

[0026] When a performer plays the percussion instrument 10, the percussion instrument 10 is placed on the floor such that the leg members 12 are positioned vertically below the percussion instrument 10. The performer then sits on the plate-shaped member 110[1] located vertically above the percussion instrument body 11 and strikes the plate-shaped members 110[2]~110[9], 120, 130, which are assembled in directions other than vertically up and down, with their hands, drumsticks, brushes, or mallets.

[0027] When a performer strikes the plate-shaped members 110[2]~110[9],120,130, the plate-shaped members 110[2]~110[9],120,130 vibrate and produce a sound. The produced sound resonates within the hollow percussion instrument body 11, and the resonant sound is released from the percussion instrument body 11 to the outside as a performance sound through an opening (described later) provided in the plate-shaped member 130. Thus, the plate-shaped members 110[2]~110[9],120,130 are plate-shaped members that are struck during performance to produce a sound, and can therefore also be called "sound-producing plates".

[0028] In the first embodiment, where the leg members 12 are attached to the percussion instrument 10, the percussion instrument 10 is placed on the floor and used while the performer is seated on the percussion instrument 10. Therefore, the plate-shaped member 110[1] located vertically above the percussion instrument body 11 and the plate-shaped member 110

[10] located vertically below the percussion instrument body 11 are not used for playing. However, it is also possible to omit the leg members and have the performer hold the percussion instrument body while playing. In this case, all 12 plate-shaped members of the percussion instrument body can be used for playing.

[0029] A2. Structure of the plate-like member: Figure 2 is an explanatory diagram showing the configuration of the plate-like members 110, 120, and 130 that constitute the percussion instrument body 11. Figures 2(a) to 2(c) show the external appearance of the three types of plate-like members 110, 120, and 130 in perspective views, respectively. In the following, when it is not necessary to specify one of the 10 plate-like members 110[1] to 110

[10] , such as plate-like member 110, the numbers enclosed in square brackets after the reference numeral will be omitted.

[0030] As shown in Figure 2(a), the plate-like member 110 is an opaque flat plate with a regular pentagonal shape. The thickness of the plate-like member 110 is adjusted appropriately so that a proper sound is produced when the plate-like member 110 is struck, while maintaining strength. Generally, it is preferable to increase the thickness of the plate-like member to increase strength. On the other hand, if the thickness of the plate-like member is made excessively thick, it becomes difficult to produce a sound. The thickness of the plate-like member is determined taking these characteristics into consideration.

[0031] The outer edge of the plate-shaped member 110 is provided with a beveled portion 111. Here, "outer" refers to the direction outside the percussion instrument body 11 (Figure 1) when the plate-shaped member 110 is assembled to form the percussion instrument body 11. The plate-shaped member 110 also has through holes 119 that penetrate in the thickness direction, near the midpoints of each side of the regular pentagon that forms its outer shape.

[0032] When assembling the plate-shaped members 110 to form the percussion instrument body 11 (Figure 1), screws such as wood screws are passed through the through holes 119, and the plate-shaped members 110 are assembled by fastening them with these screws. Therefore, the through holes 119 can also be called "assembly holes" used for assembling the plate-shaped members 110.

[0033] In the first embodiment, an inclined portion 111 is provided on the outer edge of the plate-like member 110, but the formation of the inclined portion can be omitted. Also, the plate-like member 110 has assembly holes 119 near the midpoints of each side of the regular pentagon that forms its outer shape, but the positions of the assembly holes can be changed in various ways as long as the plate-like member can be assembled.

[0034] The plate-shaped member 110 can be formed from various materials such as wood, resin, or metal. By changing the thickness and material of the plate-shaped member 110, the vibration characteristics such as the vibration modes and damping characteristics that the plate-shaped member 110 can take will change. Therefore, by changing the thickness and material of the plate-shaped member 110 in various ways, the frequency (pitch) and sound quality of the sound produced when the plate-shaped member 110 is struck can be changed.

[0035] The plate-like member 120 is made of a transparent material such as resin, and differs from the plate-like member 110 in that the entire plate-like member 120 is a transparent flat plate. Other aspects are the same as the plate-like member 110, so explanations of aspects common to both the plate-like member 110 and the plate-like member 120 will be omitted as appropriate.

[0036] Similar to the plate-shaped member 110, the plate-shaped member 120 is provided with an inclined portion 121 and has a through hole 129 formed therein. In the percussion instrument 10 shown in the example of Figure 1, the plate-shaped member 120 is transparent, so as shown in Figure 1(b), the inside of the percussion instrument body 11 can be seen through the plate-shaped member 120.

[0037] The plate-like member 130 differs from the plate-like member 110 in that a circular opening 138 is formed in the center of the plate-like member 130, penetrating in the thickness direction. Other aspects are the same as the plate-like member 110, so explanations of aspects common to both the plate-like member 130 and the plate-like member 110 will be omitted as appropriate.

[0038] Similar to the plate-shaped member 110, the plate-shaped member 130 is provided with an inclined portion 131 and has a through hole 139 formed therein. The diameter of the opening 138 formed in the plate-shaped member 130 is approximately half the length of the perpendicular line of the regular pentagon that forms the outer shape of the plate-shaped member 130.

[0039] In the example shown in Figure 2(c), the plate-like member 130 is formed from an opaque material, similar to the plate-like member 110. However, the opening may be formed in a plate-like member made from a transparent material, similar to the plate-like member 120.

[0040] As described above, the sound produced by striking the plate-shaped members 110, 120, and 130 through the openings 138 formed in the plate-shaped member 130, and the sound that resonates within the percussion instrument body 11, is released from the percussion instrument body 11 to the outside as the sound being played. In this way, as long as it is possible to release the sound being played from the percussion instrument body 11 to the outside, the size, shape, and number of openings can be changed in various ways. For example, the size of the openings can be made smaller or larger than the example in Figure 2(c). Also, the shape of the openings can be a polygon such as a triangle, square, or pentagon, and multiple openings can be formed.

[0041] Furthermore, it is possible to use multiple plate-like members with openings. However, since this makes it difficult for the sound to resonate within the body of the percussion instrument, it is preferable to use two or fewer plate-like members with openings, and even more preferable to use one. Also, when using multiple plate-like members with openings, it is preferable to arrange the plate-like members with openings so that opposing surfaces do not overlap, so that the sound resonates sufficiently within the body of the percussion instrument.

[0042] Thus, in the first embodiment of the percussion instrument 10, the percussion instrument body 11 is constructed using three types of plate-like members 110, 120, and 130. Therefore, according to the first embodiment, it is possible to generate at least three different musical scales and tonal qualities.

[0043] As shown in Figure 1, the percussion instrument body 11 of the first embodiment uses 10 opaque plate-like members 110[1] to 110

[10] , one transparent plate-like member 120, and one plate-like member 130 with an opening 138 formed therein. However, as long as at least one plate-like member with an opening is used, it is possible to change the thickness and material of the other plate-like members in various ways.

[0044] Thus, according to the first embodiment, the thickness and material of the plate-shaped members (sound plates) used for playing can be varied. Therefore, by setting the thickness or material of each sound plate separately as needed, it is possible to generate different sounds for each sound plate with different thicknesses or materials, thus enabling the generation of a wider variety of playing sounds.

[0045] Furthermore, as described above, in the first embodiment, the plate-shaped members 110, 120, and 130 are assembled by passing screws through the assembly holes 119, 129, and 139 formed in each of them and fastening them with the screws. Therefore, the sound-performing plates can be easily changed, making it easier to produce sounds that meet the performer's needs by appropriately changing the thickness or material of the sound-performing plates.

[0046] A3. Assembly method of plate-shaped members: Figure 3 is an explanatory diagram showing the assembly of plate-shaped members 110, 120, and 130 when they are assembled to form the percussion instrument body 11. In Figure 3, the percussion instrument body 11 is shown as an exploded perspective view, with the plate-shaped members 110, 120, and 130 that make up the percussion instrument body 11 moved outwards. For convenience of illustration, the plate-shaped members 110[2], 110[3], and 110[7] (Figure 1(a)), which are located in the foreground when viewing the percussion instrument body, are omitted in Figure 3.

[0047] As shown in Figure 3, the percussion instrument body 11 has a frame 200 to which plate-like members 110, 120, and 130 are assembled. The frame 200 is composed of 30 wooden frame members 210 arranged at positions corresponding to each edge of a regular dodecahedron.

[0048] In the first embodiment, the frame member 210 is made of wood, but the frame member can be made of various materials other than wood, such as resin or metal. However, it is preferable to make the frame member from a soft material such as wood, as this makes it easier to form the frame member itself and to assemble the plate-like members 110, 120, and 130. When the frame member is made from a hard material such as metal, screw holes are provided at positions corresponding to the assembly holes 119, 129, and 139 of the plate-like members 110, 120, and 130, and the plate-like members 110, 120, and 130 are assembled using parallel screws or the like.

[0049] As will be described in more detail later, the frame members 210 are formed such that when the 30 frame members 210 are arranged at positions corresponding to each edge of a regular dodecahedron, the outer side, that is, the assembly side to which the plate-like members 110, 120, and 130 are assembled, is flat. The frame 200 constructed using such frame members 210 forms a flat regular pentagonal frame on the assembly side. The plate-like members 110, 120, and 130 are then assembled so that the assembly side formed on the frame 200 is in close contact with the flat frame, so that the sound of the percussion resonates properly within the percussion instrument body 11.

[0050] Furthermore, each frame member 210 is formed so that it can be closely joined to an adjacent frame member 210 at a position corresponding to each vertex of the regular dodecahedron. The frame 200 is formed by joining adjacent frame members 210 closely to each other at positions corresponding to each vertex. The joining of adjacent frame members 210 can be done, for example, by bonding with an adhesive or by screwing them together via a connecting fitting (bracket).

[0051] A4. Frame component configuration: Figure 4 is an explanatory diagram showing the configuration of the frame member 210. Figures 4(a) and 4(b) are projection views of the frame member 210 as seen from one face (representative face) of a regular dodecahedron and from the longitudinal side of the frame member 210, respectively.

[0052] As shown in Figure 4(a), the frame member 210 has a shape symmetrical with respect to the center line MM. Here, the center line MM is a line that passes through the midpoint (shown by a black circle) of the edge line 215, which corresponds to the edge of a regular dodecahedron extending in the longitudinal direction, and is perpendicular to the edge line 215.

[0053] The frame member 210 has a first assembly surface 211[1] on the representative face side to which a plate-shaped member is assembled, and a second assembly surface 211[2] on which adjacent plate-shaped members separated by a ridge line 215 are assembled. The angle between the first assembly surface 211[1] and the second assembly surface 211[2] is set to the angle α (approximately 116.57°) between two adjacent faces of a regular dodecahedron. This angle (dihedral angle) α is expressed by the following formula.

number

[0054] At both ends in the longitudinal direction of the frame member 210, there are end faces 212[1], 213[1] perpendicular to the first assembly surface 211[1] and end faces 212[2], 213[2] perpendicular to the second assembly surface[2].

[0055] The angles between these end faces 212[1], 213[1], 212[2], 213[2] and the edges 215 of the frame member 210 are set to 54°, which is half the interior angle of a regular pentagon. By closely joining the end faces of adjacent frame members, a frame 200 (Figure 3) is obtained in which a regular pentagonal frame with a flat assembly side is formed, as shown in Figure 3.

[0056] Such a frame member 210 can be constructed from two rod-shaped members 220[1] and 220[2] of the same shape. Figures 4(c) and 4(d) are exploded projection views showing the two rod-shaped members 220[1] and 220[2] that make up the frame member 210. Figures 4(c) and 4(d) show the rod-shaped member 220 as viewed from one face of a regular dodecahedron and from the longitudinal side of the rod-shaped member 220, respectively.

[0057] As can be seen from Figures 4(a) to 4(d), the rod-shaped members 220[1] and 220[2] include the ridge line 215 of the frame member 210 and are shaped by cutting the frame member 210 with a plane that divides the angle between the two assembly surfaces 211[1] and 211[2] at an equal angle.

[0058] Therefore, the rod-shaped member 220 has an assembly surface 221 corresponding to the assembly surface 211[1] and assembly surface 211[2], a first end surface 222 corresponding to the first end surface 212[1] and 212[2], and a second end surface 223 corresponding to the second end surface 213[1] and 213[2].

[0059] The frame member 210 can then be constructed by joining the joint surfaces 224[1] and 224[2] of the two rod-shaped members 220[1] and 220[2], which correspond to the cut surfaces of the frame member 210, to each other. The two rod-shaped members 220[1] and 220[2] can be joined by adhesive or screwing with wood screws or the like.

[0060] Thus, when the frame member 210 is formed by two rod-shaped members 220[1], 220[2], the rod-shaped members 220 can be formed by cutting a rectangular bar with a rectangular cross-section to form an assembly surface 221 and two end faces 222, 223. Therefore, the frame member 210 can be formed more easily, and thus the manufacture of the percussion instrument 10 and the percussion instrument body 11 that use the frame member 210 can be made even easier.

[0061] As can be seen from the above explanation, as shown in Figures 4(c) and 4(d), the angle between the edge 225 corresponding to the edge 215 of the frame member 210 and the end faces 222 and 223 is set to 54°. Also, the angle between the assembly surface 221 and the joining surface 224 is set to α / 2 (approximately 58.28°), which is half the dihedral angle α of a regular dodecahedron.

[0062] In the first embodiment, the frame member 210 is composed of two rod-shaped members 220[1], 220[2] of the same shape, but it is also possible to constitute the frame member as a single member. However, it is preferable to constitute the frame member as two rod-shaped members of the same shape, as this makes it easier to form the frame member.

[0063] B. Second Embodiment: Figure 5 is an external perspective view showing a schematic of the percussion instrument 10a as a second embodiment. Figures 5(a) and 5(b) show the percussion instrument 10 viewed from opposite viewing directions. As shown in Figure 5(b), the percussion instrument 10a of the second embodiment differs from the percussion instrument 10 of the first embodiment in that the snare wires 13 are installed inside the percussion instrument body 11. Other aspects are the same as the percussion instrument 10 of the first embodiment, so explanations of common features with the percussion instrument 10 will be omitted as appropriate.

[0064] Generally, the snare wire 13 has a metal mounting member 310 for attaching the snare wire 13 to a percussion instrument, and a plurality of springs 320 held by the mounting member 310, and is provided in an overall flat shape. In addition to metal, the mounting member that makes up the snare wire can be made of resin or the like.

[0065] In the second embodiment, the mounting member 310 of the snare 13 is attached to the frame member 210 (Figure 3) of the percussion instrument body 11 such that the spring 320 faces the plate-shaped member 110[2]. By attaching the snare 13 to the frame member 210 in this way, the spring 320 comes into contact with the plate-shaped member 110[2].

[0066] By bringing the spring 320 into contact with the plate-shaped member 110[2], the vibration characteristics of the plate-shaped member 110[2] change. Then, when the plate-shaped member 110[2] is struck, a snare drum-like sound (snare sound) is produced, which is a mixture of the sound of the plate-shaped member 110[2] with its changed vibration characteristics and the sound produced by the collision between the plate-shaped member 110[2] and the spring 320. In this way, the snare wire 13 has the function of changing (tuning) the sound of the plate-shaped member 110[2] from its inherent sound to a snare sound, and can therefore be called a "sound tuner".

[0067] In the second embodiment, since a snare sound is generated by striking the plate-shaped member 110[2], one of the same type of plate-shaped members 110[2] to 110[9] used in performance, it is possible to generate at least four different types of percussive sounds by combining this with the sounds generated by the other plate-shaped members 110[3] to 110[9], 120, and 130.

[0068] As shown in Figure 5, in the second embodiment, the snare 13 is attached so that the spring 320 contacts the plate-shaped member 110[2]. However, it may also be attached so that the spring 320 contacts other plate-shaped members 110[3] to 110[9], 120 that do not have openings for playing, and it is also possible to attach multiple snare 13s to the percussion instrument body 11.

[0069] Furthermore, in the second embodiment, a snare 13 having a spring 320 is used to change the sound of striking the plate-shaped member 110[2] from the inherent sound of the plate-shaped member 110[2] to a snare sound. However, it is also possible to tune the plate-shaped member 110[2] using other sound tuners. For example, instead of the spring 320, a sound tuner can be used that uses a string-like material such as fishing line, wire, or cord as the sound tuner that contacts the plate-shaped member. Alternatively, a sound tuner can be used that uses a sheet-like material such as resin, cloth, or leather.

[0070] Furthermore, as is clear from Figures 5(b) and 3, the frame 200 to which the mounting member 310 of the snare 13 is attached protrudes inward from the plate-shaped member 110[2]. Therefore, even when using a snare 13 that is provided in an overall flat shape, the spring 320 can be properly brought into contact with the plate-shaped member 110[2]. Similarly, other sound tuners besides the snare 13 can also be made in an overall flat shape, making it easier to manufacture sound tuners.

[0071] C. Appearance of percussion instruments: Figures 6 to 11 are six-view drawings showing the external appearance of the percussion instrument of the first embodiment (percussion instrument 10 in Figure 1), with Figure 6 being a top view, Figure 7 a bottom view, Figure 8 a front view, Figure 9 a rear view, Figure 10 a left side view, and Figure 11 a right side view. Figures 12 and 13 are a cross-sectional view and a reference perspective view showing the transparent part along line AA (see Figures 8 and 9) of the first embodiment, respectively.

[0072] As shown in Figures 6 to 13, the percussion instrument of the first embodiment has an outer shape that is roughly a regular dodecahedron formed by combining pentagonal plates. This overall regular dodecahedron shape greatly enhances the design aesthetics of the percussion instrument.

[0073] Furthermore, as shown in Figures 6, 9, and 13, if one of the pentagonal plates forming a regular dodecahedron is made of a transparent material (for example, acrylic resin or polycarbonate resin), the shape of the frame corresponding to the edges of the regular dodecahedron will appear on the exterior of the percussion instrument as part of its internal structure. In this way, the appearance of the frame shape, combined with the highly aesthetically pleasing appearance of the regular dodecahedron, greatly enhances the overall design of the percussion instrument.

[0074] D. Variations: The present invention is not limited to the embodiments described above, and can be implemented in various forms without departing from its spirit, for example, the following modifications are also possible.

[0075] D1. Variation 1: In each of the embodiments described above, the frame 200 is constructed by joining 30 frame members 210 (Figure 3). However, the frame only needs to be constructed such that a flat, regular pentagonal frame is formed on the assembly side where the plate-shaped members are attached, and the frame can be constructed in other ways. For example, 12 regular pentagonal frame-shaped members with flat assembly sides can be prepared, and these 12 frame-shaped members can be joined together to form the frame. Alternatively, a frame can be constructed by preparing multiple members with appropriately divided shapes and joining these multiple members together.

[0076] D2. Modification 2: In each of the above embodiments, the plate-shaped members 110, 120, and 130 are assembled to the frame 200 by screwing them in using wood screws or the like through assembly holes 119, 129, and 139 formed in the plate-shaped members 110, 120, and 130. However, it is also possible to assemble the plate-shaped members to the frame by other methods. For example, it is possible to assemble the plate-shaped members to the frame by bonding them with adhesive or the like. However, it is preferable to assemble the plate-shaped members 110, 120, and 130 to the frame 200 using screws through the assembly holes 119, 129, and 139, as in each of the above embodiments, in order to make it easier to change the plate-shaped members to ones that produce different sounds according to the performer's requests.

[0077] D3. Modification 3: In each of the above embodiments, the percussion instrument body 11 is constructed by assembling the plate-shaped members 110, 120, and 130 onto the frame 200. However, the frame can be omitted if it is possible to assemble the 12 plate-shaped members to positions corresponding to each face of a regular dodecahedron. For example, it is also possible to construct the percussion instrument body by attaching joining members, which have an assembly surface and a joining surface, to the inner edge ends of each of the 12 plate-shaped members, as shown in Figure 4 (rod-shaped member 211), and joining the joining surfaces of the joining members. However, in this case, since the joining members are located inside the percussion instrument body, joining the joining surfaces is not necessarily easy. Therefore, it is preferable to construct the percussion instrument by assembling the plate-shaped members onto the frame, as in each of the above embodiments.

[0078] D4. Modification 4: In each of the above embodiments, the percussion instrument 10 (percussion instrument body 11) is configured as an acoustic instrument in which the sound generated by striking the plate-shaped members 110[2]~110[9], 120, 130 is resonated within the percussion instrument body 11, and the resonated sound is released to the outside as a performance sound. However, the percussion instrument 10 (percussion instrument body 11) can also be used as an electronic instrument.

[0079] In this case, a pickup such as a piezoelectric pickup is attached to each of the plate-shaped members 110[2]~110[9], 120, and 130. The pickups generate acoustic signals in response to the vibrations of the plate-shaped members 110[2]~110[9], 120, and 130. The generated acoustic signals are then reproduced by a speaker or similar device to produce the sound of the performance. It is also possible to generate audio data representing a musical piece using the generated acoustic signals. [Explanation of symbols]

[0080] 10,10a…Percussion instruments 11… Percussion instrument body 12...Leg member 13... Snappy 110, 120, 130… Plate-shaped members 111,121,131...Slope part 119, 129, 139… Assembly holes 138…Opening 200...frames 210... Frame components 211…Assembly surface 212, 213… Second end face 215...ridgeline 220... Rod-shaped member 221…Assembly surface 222,223...end face 224…Joint surface 225...ridgeline 310…Mounting parts 320... Spring

Claims

1. It is a percussion instrument, It comprises twelve plate-like members, each with a regular pentagonal shape, which are assembled at positions corresponding to each face of a regular dodecahedron. Of the twelve plate-like members, at least one plate-like member is provided with an opening that penetrates in the thickness direction. Percussion instrument.

2. A percussion instrument according to claim 1, further, The frame comprises the twelve plate-like members to which the aforementioned 12 plate-like members are assembled. The aforementioned frame is The twelve plate-like members are assembled to form a regular pentagonal frame with a flat assembly side. Percussion instrument.

3. A percussion instrument according to claim 2, The frame has 30 frame members, each positioned at a location corresponding to one edge of the regular dodecahedron, and is constructed by joining adjacent frame members among the 30 frame members so that they are in close contact at positions corresponding to the vertices of the regular dodecahedron. Each of the frame members is A first assembly surface is formed on the first assembly side to which the first plate-shaped member among the twelve plate-shaped members is assembled, a second assembly surface is formed on the frame member to which the second plate-shaped member adjacent to the first plate-shaped member is assembled, with the edges corresponding to the edges of the regular dodecahedron in between, two end faces perpendicular to the first assembly surface, and two end faces perpendicular to the second assembly surface. The angle between the first assembly surface and the second assembly surface is set to the dihedral angle of a regular dodecahedron, and the angle between the edge and each of the four end faces is set to half the interior angle of a regular pentagon. Percussion instrument.

4. A percussion instrument according to claim 3, The frame member is composed of two rod-shaped members, each formed by cutting the frame member with a plane that includes the ridge line of the frame member and divides the angle between the first and second assembly surfaces at an equal angle. Percussion instrument.

5. A percussion instrument according to any one of claims 2 to 4, Each of the 12 plate-like members has an assembly hole formed through it in the thickness direction. The twelve plate-like members are assembled to the frame using screws that pass through the assembly holes. Percussion instrument.

6. A percussion instrument according to any one of claims 2 to 4, further, The sound tuner comprises a sound tuning member that contacts the plate-shaped members among the 12 plate-shaped members that do not have an opening and changes the sound of the plate-shaped member when struck, and a mounting member that holds the sound tuning member. The sound tuner is attached to the frame by attaching the mounting member to the frame such that the sound tuner member faces the plate-shaped member. Percussion instrument.

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