Percussion instruments

Abstract

This percussion instrument aims to improve playability by suppressing changes in the feel of the drumhead caused by the drumhead material. [Solution] The percussion instrument comprises a cylindrical body 10 with an open end 11 on one side in the axial direction to which a head is attached, a rim sensor 3 for detecting a strike to the rim portion corresponding to the open end, a head sensor 4 for detecting a strike to the head, a support portion 20 positioned at a distance inside the body when viewed from the axial direction and at a distance on the other side in the axial direction relative to the head to which the head is attached to support the rim sensor, a plurality of connecting portions 30 extending from the support portion to the body and connecting the support portion and the body, and arranged at a distance in the circumferential direction D3 of the body, and a plurality of openings 50 opening to the other side in the axial direction between each adjacent connecting portion in the circumferential direction. The head sensor is attached to the connecting portion and contacts the head.

Description

Technical Field

[0001] The present invention relates to percussion instruments.

Background Art

[0002] Patent Document 1 discloses a percussion instrument (electronic percussion instrument) having a bowl-shaped drum body (barrel part and frame) with one open end and a head attached to the open end of the drum body. Further, in the percussion instrument of Patent Document 1, a rim sensor for detecting a strike on a rim portion corresponding to the open end of the drum body and a head sensor for detecting a strike on the head by contacting the head are attached to a part (frame) of the drum body facing the head.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the percussion instrument of Patent Document 1, the drum body does not have an opening leading to the outside other than the open end covered by the head. For this reason, depending on the material of the head attached to the drum body, there is a problem that the hitting feeling of the head (the feeling when the performer hits the head) changes. For example, in a non-breathable head made of a film material without holes, the repulsive force transmitted from the head side to the stick side at the moment of hitting the head is greater than that of a breathable head made of a mesh material or the like.

[0005] The present invention has been made in view of the above circumstances, and an object thereof is to provide a percussion instrument capable of suppressing a change in the hitting feeling of the head caused by the material of the head and improving playability.

Means for Solving the Problems

[0006] One aspect of the present invention is a percussion instrument comprising: a cylindrical body with an opening on one side in the axial direction serving as an open end for mounting a head; a rim sensor for detecting a strike to a rim portion corresponding to the open end; a head sensor for detecting a strike to the head; a support portion positioned at a distance inside the body when viewed from the axial direction, and at a distance on the other side in the axial direction relative to the head to which the head is mounted, and supporting the rim sensor facing the head in the axial direction; a plurality of connecting portions each extending from the support portion to the body and connecting the support portion and the body, and arranged at a distance in the circumferential direction of the body; and a plurality of openings between each of the circumferentially adjacent connecting portions opening to the other side in the axial direction, wherein the head sensor is attached to at least one of the connecting portions and contacts the head. [Effects of the Invention]

[0007] According to the present invention, it is possible to improve the playability of percussion instruments by suppressing changes in the feel of the head caused by the material of the head. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view showing the appearance of a percussion instrument according to one embodiment of the present invention. [Figure 2] Figure 1 is an exploded perspective view showing the percussion instrument with the head and hoop removed from the body. [Figure 3] Figure 1 is a perspective view showing the percussion instrument with the head and hoop removed. [Figure 4] Figure 3 is a plan view of the configuration as seen from the open end side of the body. [Figure 5] Figure 3 is a decomposed perspective view of the configuration. [Figure 6] This is a perspective view of the configuration in Figure 3, excluding the rim sensor, head sensor, control board, second reinforcing member, and clamping structure. [Figure 7] Figure 6 is a plan view of the configuration as seen from the open end side of the body. [Figure 8] This is a cross-sectional view taken along the line IX-IX in Figure 4. [Figure 9] This is a cross-sectional view taken along the arrow XX in Figure 4. [Figure 10] This is a cross-sectional view taken along the line XI-XI in Figure 4. [Figure 11] This figure schematically shows the main parts of a percussion instrument according to another embodiment of the present invention. [Figure 12] This figure shows the percussion instrument in Figure 11 with the length of the connecting part changed. [Figure 13] This is a cross-sectional view showing the main parts of a percussion instrument according to another embodiment of the present invention. [Modes for carrying out the invention]

[0009] An embodiment of the present invention will be described below with reference to Figures 1 to 10. As shown in Figures 1 and 2, the percussion instrument 1 of this embodiment is a drum and comprises a drum body 2, a rim sensor 3, a head sensor 4, and a control board 5. The percussion instrument 1 of this embodiment further comprises a head 6 and a hoop 7.

[0010] As shown in Figures 2, 6, and 7, the drum body 2 has one open end 11 to which the head 6 is attached. The drum body 2 comprises a body portion 10, a support portion 20, a plurality of connecting portions 30, a plurality of openings 50, and a protective portion 60.

[0011] The body portion 10 is formed in a cylindrical or ring shape. Specifically, the body portion 10 is formed in a cylindrical shape. In the following description, the direction in which the axis O of the cylindrical body portion 10 extends is called the axial direction D1. The radial direction of the axis O is called the radial direction D2 (see Figure 1). The direction that circles the axis O is called the circumferential direction D3. The opening on one side of the body portion 10 in the axial direction D1 (the upper side in Figures 2 and 6) is the open end 11 to which the head 6 is attached. In this embodiment, a plurality of lugs 12 are provided on the outer circumferential surface of the body portion 10. In addition, one through hole 13 is formed in the body portion 10, penetrating in the radial direction D2.

[0012] As shown in FIGS. 1 and 2, the head 6 is formed in a circular shape corresponding to the shape of the opening end 11 of the body 10 as viewed from the axial direction D1, and is attached to the opening end 11 of the body 10 so as to cover the opening end 11 of the body 10. The material of the head 6 may be, for example, a mesh material, a rubber material, a film material, or the like. The hoop 7 is formed in an annular shape corresponding to the opening end 11 of the body 10. The hoop 7 is externally mounted on the opening end 11 of the body 10 by being screwed to the plurality of lugs 12 of the body 10 after inserting a plurality of lag bolts 75 therethrough. Further, by attaching the hoop 7 to the opening end 11 of the body 10 in this way, the head 6 is pressed against the opening end 11 of the body 10 by the hoop 7, and the head 6 is attached to the body 10. The hoop 7 constitutes a rim portion corresponding to the opening end 11 of the body 10.

[0013] The hoop 7 of the present embodiment has an annular hoop main body 71 having a plurality of insertion holes through which the lag bolts 75 are inserted, and an annular hoop cover 72 attached to the hoop main body 71 and covering the hoop main body 71. The hoop main body 71 may be formed of, for example, metal or resin. The hoop cover 72 is a component for protecting the hoop main body 71 and may be formed of, for example, rubber. Note that the hoop 7 may be constituted by only the hoop main body 71, for example.

[0014] As shown in FIGS. 2, 6, and 7, the support portion 20 is located at a distance inside the body 10 as viewed from the axial direction D1. Further, the support portion 20 is located at a distance on the other side (the lower side in FIGS. 2 and 6) of the axial direction D1 with respect to the head 6 (the opening end 11 of the body 10). The support portion 20 faces the head 6 in the axial direction D1 and supports the rim sensor 3. Specifically, the support portion 20 has a support surface 201 that supports the rim sensor 3 facing the head 6 in the axial direction D1. The support portion 20 in the illustrated example is generally circular in a plan view as viewed from the axial direction D1, but the plan view shape of the support portion 20 may be arbitrary. Further, the support portion 20 in the illustrated example is located at the central portion of the body 10 through which the axis O passes as viewed from the axial direction D1, but may be displaced in the radial direction D2 from the central portion, for example.

[0015] The support portion 20 includes a support portion main body 21 including a support surface 201, and a rib 22 that protrudes from the support surface 201 and extends in a direction along the support surface 201. The support portion main body 21 is mainly formed in a plate shape with the axial direction D1 as the plate thickness direction, and the rib 22 has a role of reinforcing the plate-shaped support portion main body 21. The rib 22 is positioned so as not to interfere with the rim sensor 3. The shape, arrangement, and number of the ribs 22 formed on the support portion 20 are not limited to those in the illustrated example. When the strength of the support portion main body 21 is sufficient, the support portion 20 may not have the rib 22. Some of the ribs 22 of the support portion 20 are connected to the ribs (the first rib 32A and the third rib 32C) of the connection portion 30 described later.

[0016] As shown in FIGS. 2 to 4, the plurality of connection portions 30 each extend from the support portion 20 to the body portion 10 and connect the support portion 20 and the body portion 10. The plurality of connection portions 30 are arranged at intervals in the circumferential direction D3 of the body portion 10. In the present embodiment, the plurality of connection portions 30 are arranged at equal intervals in the circumferential direction D3 of the body portion 10. Also, the dimensions (angle ranges) of the connection portions 30 in the circumferential direction D3 are equal among the plurality of connection portions 30. The number of the connection portions 30 in the present embodiment is three. Hereinafter, the three connection portions 30 may be referred to as the first connection portion 30A, the second connection portion 30B, and the third connection portion 30C, respectively.

[0017] As shown in FIGS. 2, 6, and 7, each connection portion 30 has a connection plate portion 31. The connection plate portion 31 is mainly formed in a plate shape with the axial direction D1 as the plate thickness direction and extends from the support portion 20 to the body portion 10. The connection plate portion 31 in the illustrated example is formed in a fan shape centered on the axis O, but is not limited thereto. In the present embodiment, the connection plate portion 31 is integrally formed with the body portion 10 and the support portion 20.

[0018] As shown in Figures 2, 6 to 8, the first connecting portion 30A further includes a first rib 32A and a first boss 33A in addition to the connecting plate portion 31. Both the first rib 32A and the first boss 33A protrude from the opposing surface 311 of the connecting plate portion 31 that faces the head 6 (the open end 11 of the body portion 10). The first rib 32A and the first boss 33A serve to reinforce the connecting plate portion 31. The first rib 32A and the first boss 33A are integrally formed with the connecting plate portion 31.

[0019] The first rib 32A extends from the support portion 20 to the body portion 10 along the opposing surface 311 of the connecting plate portion 31. Specifically, the first rib 32A mainly extends linearly in the radial direction from the support portion 20 to the body portion 10. Multiple first ribs 32A are arranged at intervals in the circumferential direction D3. The first boss 33A is positioned in the radial direction D2 closer to the body portion 10 than the support portion 20. In Figure 8, the height dimension of the first boss 33A in the axial direction D1 is greater than the height dimension of the first rib 32A. Two first bosses 33A are arranged side by side with a gap between them in the circumferential direction D3. The two first bosses 33A also serve to attach the head sensor 4, which will be described later, to the first connection portion 30A.

[0020] As shown in Figures 3 to 7 and Figure 9, the second connecting portion 30B further includes a second reinforcing member 34B and a plurality of second bosses 33B, in addition to the connecting plate portion 31. The second reinforcing member 34B is positioned on the opposing surface 311 side of the connecting plate portion 31 that faces the head 6 (open end 11 of the body portion 10), and is fixed to the connecting plate portion 31 by a fixing member 91. The plurality of second bosses 33B protrude from the opposing surface 311 of the connecting plate portion 31. The plurality of second bosses 33B are integrally formed with the connecting plate portion 31. Some of the plurality of second bosses 33B have a high protrusion height, and some have a low protrusion height.

[0021] The second reinforcing member 34B in this embodiment is formed in the shape of a flat plate. The second reinforcing member 34B is arranged so that its thickness direction is oriented in the axial direction D1. Specifically, the second reinforcing member 34B is positioned at the tips of a plurality of second bosses 33B with high protrusion heights. The second reinforcing member 34B is then fixed to the tips of the plurality of second bosses 33B by screws, which serve as fixing members 91. The second reinforcing member 34B, positioned in this manner, serves to reinforce the connecting plate portion 31.

[0022] As shown in Figures 3 to 7 and Figure 10, the third connecting portion 30C is located in the circumferential direction D3, corresponding to the area where the through hole 13 is formed in the body portion 10. In addition to the connecting plate portion 31, the third connecting portion 30C further includes a third rib 32C, a third boss 33C, and a clamping structure 35C. As shown in Figures 6, 7, and 10, the third rib 32C and the third boss 33C both protrude from the opposing surface 311 of the connecting plate portion 31 that faces the head 6 (the open end 11 of the body portion 10). The third rib 32C and the third boss 33C serve to reinforce the connecting plate portion 31. The third rib 32C and the third boss 33C are integrally formed with the connecting plate portion 31.

[0023] The third rib 32C extends from the support portion 20 to the body portion 10 along the opposing surface 311 of the connecting plate portion 31. Specifically, the third rib 32C extends from the support portion 20 to the body portion 10 while bending. In addition, multiple third ribs 32C intersect or connect with each other when viewed from the axial direction D1. Multiple third bosses 33C are arranged at intervals along the opposing surfaces 311 of the connecting plate portion 31. The multiple third bosses 33C also serve to attach the clamping structure 35C to the connecting plate portion 31. Some of the third bosses 33C are connected to the third rib 32C, or are integrally formed with the third rib 32C.

[0024] As shown in Figures 3 to 5 and Figure 10, the clamping structure 35C clamps the rod-shaped member 9 inserted into the inside of the body 10 from the outside of the body 10 through the through hole 13. The rod-shaped member 9 may be, for example, a component of a drum stand to which a percussion instrument 1 is attached. As shown in Figure 10, the clamping structure 35C comprises a housing 36C, two clamping members 37C, and a tightening screw 38C. The two clamping members 37C are members that clamp the rod-shaped member 9. One clamping member 37C is held immovably relative to the housing 36C. The other clamping member 37C is held movable relative to the housing 36C within a predetermined range. The other clamping member 37C is allowed to move away from or closer to the first clamping member 37C within a predetermined range. The tightening screw 38C is screwed into the housing 36C. By rotating the tightening screw 38C relative to the housing 36C, the other clamping member 37C can be brought closer to the first clamping member 37C, allowing the rod-shaped member 9 to be clamped by the two clamping members 37C.

[0025] As shown in Figures 3 to 5 and Figure 10, the housing 36C is fixed to the connecting plate portion 31 by fixing members 92. Specifically, the first plate material 361C constituting the housing 36C is positioned at the tips of the multiple third bosses 33C. The first plate material 361C is then fixed to the tips of the multiple third bosses 33C by screws, which act as fixing members 92. The first plate material 361C covers most of the opposing surface 311 of the connecting plate portion 31 of the third connecting portion 30C. The housing 36C, including the first plate material 361C, functions as a reinforcing member (third reinforcing member) that reinforces the connecting plate portion 31.

[0026] As shown in Figures 2 and 7, the multiple openings 50 open to the other side in the axial direction D1 between each of the adjacent connecting portions 30 in the circumferential direction D3. Each opening 50 is surrounded by the body portion 10, the support portion 20, and two connecting portions 30 aligned in the circumferential direction D3, as viewed from the axial direction D1. The opening 50 illustrated in Figure 7 is formed in a fan shape when viewed from the axial direction D1.

[0027] The body portion 10 of this embodiment has a plurality of reinforcing portions 15 provided between adjacent connecting portions 30 in the circumferential direction D3. There are three reinforcing portions 15 in this embodiment. Each reinforcing portion 15 protrudes radially inward from the main body portion of the cylindrical body portion 10. Each reinforcing portion 15 is formed in an arc shape that extends in the circumferential direction D3 along the main body portion of the body portion 10. Both ends of each reinforcing portion 15 in the circumferential direction D3 are connected to the connecting plate portion 31 of the connecting portion 30. In addition, each reinforcing portion 15 faces the support portion 20 in the radial direction D2 through an opening 50. The reinforcing portions 15 reinforce the main body portion of the body portion 10.

[0028] The reinforced portion 15 of this embodiment has a strip portion 17 and a plurality of ribs 18. The strip portion 17 is formed in an arc shape that extends in the circumferential direction D3 when viewed from the axial direction D1. In Figure 7, the strip portion 17 is inclined in the axial direction D1 toward the head 6 (open end 11 of the body portion 10) as it extends radially inward from the main body portion of the body portion 10. The plurality of ribs 18 each protrude from the opposing surface 171 of the strip portion 17 that faces the head 6 (open end 11 of the body portion 10) and extend radially D2 along the opposing surface 311. The plurality of ribs 18 also each contact the inside of the main body portion of the body portion 10. The plurality of ribs 18 are arranged at intervals in the circumferential direction D3. The plurality of ribs 18 reinforce the main body portion of the body portion and the strip portion 17.

[0029] As shown in Figures 2, 6, and 7, the protective portion 60 extends from the edges of the support portion 20 and connecting portion 30 that constitute the edges of each opening 50 in a plan view from the axial direction D1, to one side in the axial direction D1 (upward in Figures 2 and 6). That is, the protective portion 60 extends from the edges of the support portion 20 and connecting portion 30 toward the head 6 (open end 11 of the body portion 10) in the axial direction D1. In this embodiment, the protective portion 60 extends from the edge of the reinforcing portion 15 of the body portion 10 that constitutes the edge of each opening 50 to one side in the axial direction D1. Therefore, the protective portion 60 is formed to surround the opening 50 when viewed from the axial direction D1. In addition, the tip of the protective portion 60 is located lower than the opening end 11 of the body portion 10. Therefore, the protective portion 60 does not come into contact with the head 6. In this embodiment, the protective portion 60 is integrally formed with the body portion 10, the support portion 20, and the connecting portion 30.

[0030] In this embodiment, the protective portion 60 is formed in the shape of a plate. Furthermore, as shown in Figures 4 and 6, an exposed hole 61 is formed in a part of the protective portion 60 that penetrates in the direction of its plate thickness and exposes the pin jack 56 to the opening 50 side. In the illustrated example, the exposed hole 61 is formed in the part of the protective portion 60 located at the connection portion 30 and opens at the tip of the protective portion 60. The pin jack 56 exposed from the exposed hole 61 to the opening 50 side is a connection terminal for electrically connecting the sensor circuit, including the rim sensor 3, head sensor 4, and control board 5, to the outside. The protective portion 60 may be formed in the shape of a grid, a mesh, or the like. Furthermore, the grid-like or mesh-like protective portion 60 may be constructed by combining, for example, multiple rod-shaped members.

[0031] The rim sensor 3 shown in Figures 2 to 5 detects impacts to the rim portion corresponding to the open end 11 of the body portion 10. In this embodiment, the rim sensor 3 mainly detects impacts to the hoop 7. Specifically, the rim sensor 3 mainly detects vibrations that occur when the hoop 7 is struck. The rim sensor 3 also sends an electrical signal corresponding to the detected vibration to the control board 5, which will be described later. As shown in Figures 3 and 4, the rim sensor 3 is positioned on the support surface 201 of the support portion 20. The rim sensor 3 may be fixed to the support portion 20 by means of adhesive, for example. With the rim sensor 3 attached to the support portion 20 in this way, when the rim portion is struck, the vibration resulting from the impact is transmitted sequentially from the body portion 10 to the connecting portion 30 and the support portion 20, and reaches the rim sensor 3. As a result, the rim sensor 3 can detect the impact on the rim portion.

[0032] The head sensor 4 shown in Figures 8 to 10 detects impacts to the head 6, which is attached to the open end 11 of the body 10. Specifically, the head sensor 4 detects vibrations of the head 6 that occur when the head 6 is struck. The head sensor 4 is attached to the connection part 30 and contacts the head 6. In this embodiment, a cushioning material 90 is interposed between the head sensor 4 and the connection part 30 to absorb vibrations of the connection part 30.

[0033] As shown in Figures 1 to 5, the number of head sensors 4 in this embodiment corresponds to the number of connection parts 30, i.e., three. These three head sensors 4 are attached one to each of the three connection parts 30. The three head sensors 4 are arranged at equal intervals in the circumferential direction D3. Furthermore, each of the three head sensors 4 is located midway between the connection parts 30 in the circumferential direction D3. In addition, each of the three head sensors 4 is located closer to the body part 10 than to the support part 20 in the radial direction D2. The number of head sensors 4 in the percussion instrument 1 may be less than the number of connection parts 30 (for example, one). In this case, the head sensors 4 only need to be attached to some of the connection parts 30.

[0034] As shown in Figures 8 to 10, the head sensor 4 of this embodiment comprises a sensor body 41, a support plate portion 42, and a vibration transmission member 43. The sensor body 41 detects vibrations of the head 6. The sensor body 41 also sends an electrical signal corresponding to the detected vibration to the control board 5, which will be described later.

[0035] The support plate portion 42 supports the sensor body 41. The sensor body 41 is fixed to the surface of the support plate portion 42 facing one side in the thickness direction. The support plate portion 42 is formed in the shape of a strip with a predetermined straight direction as its longitudinal direction. The sensor body 41 is located in the middle of the longitudinal direction of the support plate portion 42. Therefore, both ends of the support portion 20 in the longitudinal direction are located on both sides of the sensor body 41. In this embodiment, a cushioning material 44 is provided between the sensor body 41 and the support plate portion 42. The cushioning material 44 has vibration-absorbing properties, that is, it has the function of suppressing the transmission of vibrations from the support plate portion 42 to the sensor body 41. The sensor body 41 may be directly fixed to the support plate portion 42, for example.

[0036] The support plate portion 42 is fixed to the connection portion 30 by two fixing members 93. Specifically, both ends of the support plate portion 42, which are located on both sides of the sensor body 41, are fixed to the connection portion 30 by the two fixing members 93. These two fixing members 93 are located on both sides of the sensor body 41 in the circumferential direction D3 (see Figure 4). In this embodiment, the fixing members 93 are screws, but they may also be adhesives, for example. The aforementioned cushioning material 90 is interposed between both ends of the support plate portion 42 in the longitudinal direction and the connection portion 30. The specific mounting configuration of the support plate portion 42 to the first to third connection portions 30A to 30C will be described later.

[0037] The vibration transmission member 43 is attached to the sensor body 41 and sandwiches the sensor body 41 between itself and the support plate portion 42. The vibration transmission member 43 contacts both the sensor body 41 and the head 6, transmitting the vibrations of the head 6 to the sensor body 41. The vibration transmission member 43 may be an elastic material that deforms elastically, such as a sponge. As a result, when the head 6 is struck, the vibrations of the head 6 reach the sensor body 41 via the vibration transmission member 43, allowing the sensor body 41 to detect the impact on the head 6.

[0038] The vibration propagation member 43 may be provided as a single unit between the sensor body 41 and the head 6, as illustrated in Figures 8 to 10, or multiple members may be stacked in a direction that aligns the sensor body 41 and the head 6. Furthermore, the head sensor 4 may not include, for example, a vibration transmission member 43, and the sensor body 41 may directly contact the head 6.

[0039] The following describes the specific mounting configuration of the support plate portion 42 of the head sensor 4 to the first to third connection portions 30A to 30C. As shown in Figure 8, the support plate portion 42 of the head sensor 4 (first head sensor 4A) attached to the first connection portion 30A is positioned at the tips of the two first bosses 33A of the first connection portion 30A. The support plate portion 42 of the first head sensor 4A is then fixed to the tips of the two first bosses 33A by screws, which serve as fixing members 93. In this state, a buffer material 90 is interposed between both ends of the support plate portion 42 of the first head sensor 4A and the two first bosses 33A.

[0040] As shown in Figure 9, the support plate portion 42 of the head sensor 4 (second head sensor 4B) attached to the second connection portion 30B is positioned at a distance from the surface of the second reinforcing member 34B of the second connection portion 30B that faces the head 6 (open end 11 of the body portion 10). The support plate portion 42 of the second head sensor 4B is then fixed to the second reinforcing member 34B by screws acting as fixing members 93. In this state, a buffer material 90 is interposed between both ends of the support plate portion 42 of the second head sensor 4B and the second reinforcing member 34B.

[0041] As shown in Figure 10, the support plate portion 42 of the head sensor 4 (third head sensor 4C) attached to the third connection portion 30C is positioned at a distance from the surface of the housing 36C (third reinforcing member) of the third connection portion 30C that faces the head 6 (open end 11 of the body portion 10). Specifically, it is positioned at a distance from the second plate material 362C located on the head 6 (open end 11 of the body portion 10) side of the housing 36C. The support plate portion 42 of the third head sensor 4C is then fixed to the housing 36C (second plate material 362C) by screws acting as fixing members 93. In this state, a buffer material 90 is interposed between both ends of the support plate portion 42 of the third head sensor 4C and the housing 36C.

[0042] The control board 5 shown in Figures 2-5 and 9 controls the operation of the rim sensor 3 and head sensor 4 described above. The control board 5 also processes the electrical signals sent from the rim sensor 3 and head sensor 4 as appropriate and outputs them to external devices through the pin jack 56. The control board 5 is electrically connected to the rim sensor 3, the multiple head sensors 4, and the pin jack 56 by electrical wiring (not shown).

[0043] As shown in Figure 9, the control board 5 of this embodiment is attached to the second connection portion 30B. The control board 5 is positioned between the connection plate portion 31 of the second connection portion 30B and the second reinforcing member 34B, which are arranged side by side in the axial direction D1, and is covered by the second reinforcing member 34B. Specifically, the control board 5 is positioned at the tips of multiple low-height second bosses 33B. The control board 5 is then fixed to the tips of the multiple second bosses 33B by screws, which serve as fixing members 94. As a result, the control board 5 is positioned between the connecting plate portion 31 of the second connection portion 30B and the second reinforcing member 34B. In addition, the portion of the control board 5 facing the head 6 (open end 11 of the body portion 10) is covered by the second reinforcing member 34B.

[0044] Although not shown in the diagram, the various electrical wirings connecting the rim sensor 3, head sensor 4, and pin jack 56 to the control board 5 are arranged in the region that overlaps with the support portion 20 and connection portion 30 in the axial direction D1, and are not arranged in the position that overlaps with the opening 50 in the axial direction D1. Furthermore, these electrical wirings are arranged on the support surface 201 side of the support portion 20 and on the opposing surface 311 side of the connection plate portion 31.

[0045] As described above, in the percussion instrument 1 of this embodiment, one opening on the axial direction D1 of the body 10 is the opening end 11 to which the head 6 is attached. On the other side of the axial direction D1 of the body 10, the support portion 20 and a plurality of connecting portions 30 are located. Between each of the adjacent connecting portions 30 in the circumferential direction D3, a plurality of openings 50 open on the other side of the axial direction D1. Therefore, regardless of the material of the head 6, it is possible to suppress a large difference in the repulsive force transmitted from the head 6 to the performer at the moment the performer strikes the head 6. This makes it possible to suppress changes in the feel of striking the head 6 due to the material of the head 6. Thus, the playability of the percussion instrument 1 can be improved.

[0046] Furthermore, by providing multiple openings 50 in the part of the body 10 of the percussion instrument 1 that faces the head 6 in the axial direction D1, the sound can be released more effectively when the head 6 is struck. Furthermore, compared to the case where the percussion instrument 1 does not have multiple openings 50, it is possible to reduce the weight of the percussion instrument 1. Furthermore, another head sensor can be passed through the opening 50 and brought into contact with the head 6. In other words, it is possible to add a head sensor later.

[0047] Furthermore, in the percussion instrument 1 of this embodiment, the body portion 10 and the support portion 20 are connected by a plurality of connecting portions 30 arranged at intervals along the circumferential direction D3 of the body portion 10. This suppresses variations in the time from when the rim portion (hoop 7) is struck until the vibration corresponding to that strike reaches the rim sensor 3. This point will be explained below.

[0048] For example, when the body portion 10 and the support portion 20 are connected by a single connecting portion 30, the distance from the striking position of the rim portion to the support portion 20 via the connecting portion 30 varies greatly depending on the striking position of the rim portion in the circumferential direction D3. Therefore, the time it takes for the vibration corresponding to the striking of the rim portion to reach the rim sensor 3 varies greatly depending on the striking position of the rim portion in the circumferential direction D3. For example, when the rim portion located close to the connection portion between the body portion 10 and the connecting portion 30 in the circumferential direction D3 is struck, the time it takes for the vibration corresponding to the striking of the rim portion to reach the rim sensor 3 is short. On the other hand, when the rim portion located far from the connection portion between the body portion 10 and the connecting portion 30 in the circumferential direction D3 is struck, the time it takes for the vibration corresponding to the striking of the rim portion to reach the rim sensor 3 is long. In contrast, when the body portion 10 and the support portion 20 are connected by a plurality of connecting portions 30 arranged in the circumferential direction D3, the distance from the striking position of the rim portion to the support portion 20 via the vibrating portion can be suppressed from changing significantly depending on the striking position of the rim portion in the circumferential direction D3 of the body portion 10. As a result, the variation in the time from when the rim portion is struck until the vibration corresponding to that strike reaches the rim sensor 3 can be reduced, depending on the striking position of the rim portion in the circumferential direction D3 of the body portion 10.

[0049] Furthermore, in the percussion instrument 1 of this embodiment, multiple connection parts 30 are arranged at equal intervals in the circumferential direction D3, and the dimensions (angle range) of the connection parts 30 in the circumferential direction D3 are equal among the multiple connection parts 30. Therefore, variations in the time from when the rim is struck until the vibration corresponding to that strike reaches the rim sensor 3 can be further suppressed.

[0050] Furthermore, in the percussion instrument 1 of this embodiment, the first connecting portion 30A and the third connecting portion 30C each have a connecting plate portion 31 extending from the support portion 20 to the body portion 10, and ribs (first rib 32A, third rib 32C) protruding from the opposing surface 311 of the connecting plate portion 31 and extending from the support portion 20 to the body portion 10. Therefore, the connecting plate portion 31 can be reinforced by the ribs, thereby improving the strength of the first connecting portion 30A and the third connecting portion 30C.

[0051] Furthermore, in the percussion instrument 1 of this embodiment, the second connection portion 30B and the third connection portion 30C each have a connecting plate portion 31 extending from the support portion 20 to the body portion 10, and a reinforcing member (second reinforcing member 34B, housing 36C) arranged on the opposing surface 311 side of the connecting plate portion 31. Therefore, the strength of the second connection portion 30B and the third connection portion 30C can be improved by reinforcing the connecting plate portion 31 with the reinforcing member.

[0052] Furthermore, in the percussion instrument 1 of this embodiment, the control board 5 is positioned between the connecting plate portion 31 of the second connecting portion 30B and the second reinforcing member 34B, and is covered by the second reinforcing member 34B. This allows the control board 5 to be protected by the second reinforcing member 34B. The configuration in which the control board 5 is covered by the second reinforcing member 34B is particularly effective when the head 6 is detached from the open end 11 of the body portion 10. Furthermore, since the second reinforcing member 34B serves both to reinforce the connecting plate portion 31 and to protect the control board 5, it is possible to reduce the number of components in the percussion instrument 1.

[0053] Furthermore, in the percussion instrument 1 of this embodiment, a protective part 60 is provided that extends from the edges of the support part 20 and connection part 30 that constitute the edge of the opening 50 toward the head 6 (open end 11 of the body part 10) when viewed in a plan view from the axial direction D1. Therefore, even if the user's hand or other body part enters the inside of the body part 10 through the opening 50, the protective part 60 prevents it from reaching the rim sensor 3, head sensor 4, control board 5, electrical wiring, etc., which are located at the support part 20 and connection part 30 opposite the head 6. Also, if the rim sensor 3, head sensor 4, and electrical wiring connecting the pin jack 56 to the control board 5 are located at the support part 20 and connection part 30 opposite the head 6, the protective part 60 can prevent the user's hand or other body part from reaching the electrical wiring. Therefore, even if the size of the opening 50 when viewed from the axial direction D1 is large, protection of the rim sensor 3, head sensor 4, control board 5, electrical wiring, etc. can be ensured.

[0054] Furthermore, in the percussion instrument 1 of this embodiment, a cushioning material 90 is interposed between the head sensor 4 and the connection part 30 to absorb vibrations of the connection part 30. Therefore, it is possible to suppress the detection of vibrations corresponding to the impact on the rim portion by the head sensor 4. This point will be explained below. When the rim is struck, vibrations corresponding to the impact travel from the body 10 through the connecting part 30 and the support part 20 in sequence to the rim sensor 3, causing the rim sensor 3 to detect the impact on the rim. Although vibrations corresponding to the impact on the rim also travel from the connecting part 30 to the head sensor 4, they are absorbed by the cushioning material 90, thus preventing them from reaching the head sensor 4. As a result, vibrations corresponding to the impact on the rim are prevented from being detected by the head sensor 4.

[0055] Furthermore, in the percussion instrument 1 of this embodiment, a cushioning material 44 that absorbs vibrations from the connection part 30 is interposed between the sensor body 41 and the support plate 42 of the head sensor 4. Therefore, even if vibrations corresponding to the impact on the rim are transmitted from the connection part 30 to the support plate 42 of the head sensor 4, these vibrations can be absorbed by the cushioning material 44. This suppresses the vibrations from reaching the sensor body 41. Consequently, it is possible to suppress the detection of vibrations corresponding to the impact on the rim by the sensor body 41.

[0056] Furthermore, in the percussion instrument 1 of this embodiment, the two fixing members 93 that fix the support plate portion 42 of the head sensor 4 to the connection portion 30 are located on both sides of the sensor body 41 of the head sensor 4 in the circumferential direction D3. Therefore, compared to the case where the two fixing members 93 are located on both sides of the sensor body 41 in the radial direction D2, the head sensor 4 attached to the connection portion 30 can be positioned closer to the body portion 10 or closer to the support portion 20.

[0057] Although the present invention has been described in detail above, the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention.

[0058] In the present invention, the three head sensors 4 (4A to 4C) are not limited to being attached to the connection portion 30 with different structures as in the above embodiment, but may also be attached to the connection portion 30 with a common structure, for example. Specifically, for example, by arranging the control board 5 in a different location from the second connection part 30B (for example, the support part 20), the structure for attaching the second head sensor 4B to the second connection part 30B may be the same as the structure for attaching the first head sensor 4A to the first connection part 30A as shown in Figure 8. Also, by arranging the clamping structure 35C that holds the rod-shaped member 9 on the outside of the body and removing the clamping structure 35C from the third connection part 30C, the structure for attaching the third head sensor 4C to the third connection part 30C may be the same as the structure for attaching the first head sensor 4A to the first connection part 30A as shown in Figure 8. In other words, the mounting structures for all three head sensors 4 (4A to 4C) may be the same as the structure for attaching the first head sensor 4A to the first connection part 30A as shown in Figure 8.

[0059] Alternatively, the mounting structure for the three head sensors 4 (4A to 4C) may be such that the second head sensor 4B is attached to the second connection part 30B, as shown in Figure 9, or the third head sensor 4C is attached to the third connection part 30C, as shown in Figure 10.

[0060] Furthermore, the mounting structure for the three head sensors 4 (4A to 4C) may employ any two of the following: for example, the mounting structure for the first head sensor 4A to the first connection part 30A as shown in Figure 8, the mounting structure for the second head sensor 4B to the second connection part 30B as shown in Figure 9, and the mounting structure for the third head sensor 4C to the third connection part 30C as shown in Figure 10.

[0061] In the present invention, the mounting structure for the head sensor 4 (4A to 4C) and the mounting structure for the rim sensor 3 are not limited to the above-described structure, but may be other structures.

[0062] In the percussion instrument of the present invention, for example, the support portion 20 and the connecting portion 30 may be formed separately from the body portion 10 and may be attached to the inside of the body portion 10 when viewed from the axial direction D1. In this case, the percussion instrument may have a length adjustment mechanism 100 for adjusting the length of the connecting portion 30 extending from the support portion 20, as shown in Figures 11 and 12. The length adjustment mechanism 100 shown in Figures 11 and 12 adjusts the length of all connecting portions 30. Note that the length adjustment mechanism 100 only needs to be configured to adjust the length of at least one connecting portion.

[0063] As illustrated in Figures 11 and 12, in a percussion instrument having a length adjustment mechanism 100, the unit including the support part 20 and the connecting part 30, as well as the rim sensor 3, head sensor 4, control board 5, etc. attached thereto, can be attached to various types of drum bodies 10 (for example, the drum body 10 of an acoustic drum). In particular, the unit can be attached to drum bodies 10 of various diameters. For example, as shown in Figure 11, if the length of the connecting part 30 is adjusted to be longer, the unit can be attached to a drum body 10 with a larger diameter. On the other hand, as shown in Figure 12, if the length of the connecting part 30 is adjusted to be shorter, the unit can be attached to a drum body 10 with a smaller diameter.

[0064] Furthermore, if the support portion 20 and the connecting portion 30 are formed separately from the body portion 10 and can be attached to the inside of the body portion 10 when viewed from the axial direction D1, the percussion instrument may have a height adjustment mechanism that adjusts the height of the head sensor 4 in the axial direction D1 with respect to the connecting portion 30. Various methods can be considered for the height adjustment mechanism, but for example, it may have the height adjustment mechanism 200 shown in Figure 13. As shown in Figure 13, the height adjustment mechanism 200 may be composed of, for example, a spacer 210 that can be interposed between the connection part 30 and the head sensor 4. The height position of the head sensor 4 may be adjusted by the number of spacers 210 interposed between the connection part 30 and the head sensor 4.

[0065] The spacer 210 illustrated in Figure 13 has a male threaded portion 211 and a female threaded portion 212. The spacer 210 can be placed on the connection portion 30 by screwing the male threaded portion 211 of the spacer 210 into the female threaded portion formed on the connection portion 30. Furthermore, the number of overlapping spacers 210 on the connection portion 30 can be increased by screwing the male threaded portion 211 of another spacer 210 into the female threaded portion 212 of the same spacer 210. Furthermore, if the screw serving as the fixing member 93 is passed through the head sensor 4 (support plate portion 42) and then screwed into the female thread portion of the connection portion 30, the head sensor 4 can be directly attached to the connection portion 30. On the other hand, if the screw serving as the fixing member 93 is passed through the head sensor 4 (support plate portion 42) and then screwed into the female thread portion 212 of the spacer 210 attached to the connection portion 30, the head sensor 4 can be attached to the connection portion 30 via the spacer 210.

[0066] In a percussion instrument having a height adjustment mechanism 200, a unit including a support part 20, a connecting part 30, a rim sensor 3, a head sensor 4, a control board 5, etc., can be attached to various types of drum bodies 10 (for example, the drum body 10 of an acoustic drum). In particular, the unit can be attached to drum bodies 10 of various height dimensions (dimensions in the axial direction D1). For example, when attaching the unit to a drum body 10 with a large height dimension, the height adjustment mechanism 200 can be used to adjust the height position of the head sensor 4 from the connecting part 30 to a higher position, thereby allowing the head sensor 4 to make proper contact with the head 6. Also, for example, when attaching the unit to a drum body 10 with a small height dimension, the height adjustment mechanism 200 can be used to adjust the height position of the head sensor 4 from the connecting part 30 to a lower position, thereby allowing the head sensor 4 to make proper contact with the head 6.

[0067] In the present invention, the reinforcing members of the connecting portion 30 (the second reinforcing member 34B and housing 36C in the above embodiment) are not limited to being fixed to the connecting plate portion 31 by screws, but may also be fixed to the connecting plate portion 31 by other methods, such as adhesive bonding. Furthermore, the reinforcing member of the connecting portion 30 is not limited to being formed separately from the connecting plate portion 31 and fixed to the connecting plate portion 31; for example, it may be formed integrally with the connecting plate portion 31.

[0068] In the present invention, the second connecting portion 30B and the third connecting portion 30C may, for example, be provided only with ribs that protrude from the opposing surface 311 of the connecting plate portion 31 and extend from the support portion 20 to the body portion 10, as the main structure for reinforcing the connecting plate portion 31, similar to the first connecting portion 30A. Alternatively, the first connecting portion 30A and the third connecting portion 30C may, for example, be provided only with reinforcing members arranged on the opposing surface 311 side of the connecting plate portion 31, as the main structure for reinforcing the connecting plate portion 31, similar to the second connecting portion 30B. Furthermore, the first connecting portion 30A and the second connecting portion 30B may, for example, be provided with the above-mentioned ribs and reinforcing members, similar to the third connecting portion 30C. In other words, the structure for reinforcing the connecting plate portion 31 may be the same, for example, among multiple connecting portions 30.

[0069] In the present invention, the number of fixing members 93 that fix the support plate portion 42 of the head sensor 4 to the connecting portion 30 is not limited to two, but may be three or more, for example.

[0070] In the present invention, the control board 5 does not need to be covered by, for example, a reinforcing member. Furthermore, the control board 5 is not limited to being attached to the connection part 30; for example, it may be attached to the support part 20. In this case, the control board 5 should be positioned on the support surface 201 side of the support part 20.

[0071] The present invention is not limited to being applied to drums, but can also be applied to other percussion instruments (e.g., bongos, congas) to which a head can be attached at least to the open end of the drum body. [Explanation of Symbols]

[0072] 1...Percussion instrument, 3...Rim sensor, 4...Head sensor, 4A...First head sensor, 4B...Second head sensor, 4C...Third head sensor, 5...Control board, 6...Head, 10...Body, 11...Open end, 20...Support part, 30...Connection part, 30A...First connection part, 30B...Second connection part, 30C...Third connection part, 31...Connection plate part, 32A...First rib, 32C...Third rib, 34B...Second reinforcing member (reinforcing member), 36C...Housing (reinforcing member), 41...Sensor body, 42...Support plate part, 50...Opening, 60...Protective part, 90...Cushioning material, 93...Fixing member, 100...Length adjustment mechanism, 200...Height adjustment mechanism, 311...Opposite surface, D1...Axial direction, D3...Circumferential direction

Claims

1. A cylindrical body with an opening on one side in the axial direction that serves as the end for attaching the head, A rim sensor that detects impact on the rim portion corresponding to the open end, A head sensor for detecting impact to the head, A support portion is positioned at a distance on the inside of the body when viewed from the axial direction, and at a distance on the other side in the axial direction relative to the head to which it is mounted, and supports the rim sensor facing the head in the axial direction, Each of the following connecting parts extends from the support part to the body part and connects the support part and the body part, and is arranged at intervals in the circumferential direction of the body part, It comprises a plurality of openings that open to the other side in the axial direction between each of the circumferentially adjacent connecting portions, The head sensor is attached to at least one of the connection points and contacts the head of the percussion instrument.

2. The percussion instrument according to claim 1, wherein at least one of the connecting portions comprises a connecting plate portion having the axial direction in the thickness direction of the plate and extending from the support portion to the body portion, and a rib protruding from the opposing surface of the connecting plate portion facing the head and extending from the support portion to the body portion.

3. The percussion instrument according to claim 1 or 2, wherein at least one of the connecting portions comprises a connecting plate portion having the axial direction as the thickness direction of the plate and extending from the support portion to the body portion, and a reinforcing member disposed on the opposing surface side of the connecting plate portion facing the head.

4. The system includes a control board that controls the operation of the rim sensor and the head sensor, The percussion instrument according to claim 3, wherein the control board is disposed between the connecting plate portion and the reinforcing member and is covered by the reinforcing member.

5. The percussion instrument according to claim 1 or claim 2, further comprising a protective portion extending from the edge of the support portion and the connecting portion that constitute the edge of the opening to one side in the axial direction, in a plan view taken from the axial direction.

6. The percussion instrument according to claim 1 or claim 2, wherein a cushioning material that absorbs vibrations of the connection portion is interposed between the head sensor and the connection portion.

7. The head sensor comprises a sensor body and a support plate portion that supports the sensor body. The support plate portion is fixed to the connection portion by at least two fixing members. The percussion instrument according to claim 1 or claim 2, wherein the two fixing members are located on both sides of the sensor body in the circumferential direction.

8. The support portion and the connecting portion are formed separately from the body portion and are attachable to the inside of the body portion when viewed from the axial direction. The percussion instrument according to claim 1 or claim 2, further comprising a length adjustment mechanism for adjusting the length of at least one of the connecting parts.

9. The support portion and the connecting portion are formed separately from the body portion and are attachable to the inside of the body portion when viewed from the axial direction. The percussion instrument according to claim 1 or claim 2, further comprising a height adjustment mechanism for adjusting the height position of the head sensor in the axial direction with respect to the connection portion.

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