Percussion instrument and method for forming percussion surfaces

Abstract

To provide a percussion instrument and a method for forming percussion surfaces capable of improving durability of the percussion surfaces.SOLUTION: In a front-to-back direction, outer edge portions of a membrane member 11 and a cushion 12 are arranged to overlap with a peripheral portion of a through hole 3a of a head 3 (a percussion surface 11a is formed by a portion of the membrane member 11 located on the inner side of the through hole 3a of the head 3). This allows the head 3 to restrict deformation where the outer edge of the cushion 12 bulges when the membrane member 11 is struck by a beater 103. Consequently, it suppresses peeling at the bonding area between the membrane member 11 and the cushion 12, as well as cracking on the outer peripheral surface of the cushion 12. Therefore, durability of the striking surface 11a (the membrane member 11 and cushion 12) can be improved.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a percussion instrument and a method for forming a striking surface, and more particularly to a percussion instrument and a method for forming a striking surface that can improve the durability of the striking surface. [Background technology]

[0002] For example, Patent Document 1 describes a technique for forming a striking surface by adhering a cushion portion 47 (first cushion) to the rear surface of a hard body 48 (membrane member) such as woven fabric. This technique allows the cushion portion 47 to absorb the impact when striking the hard body 48, thereby reducing the striking sound generated when striking. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2017 / 038226 (e.g., paragraphs 0066, 0067, Figures 5, 6) Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional technology described above, when the hard body 48 is struck, the center of the cushion portion 47 is compressed, while the outer edge of the cushion portion 47 is deformed such that the thickness of the cushion portion 47 increases. This deformation of the outer edge of the cushion portion 47 can easily cause separation between the bonded portion of the hard body 48 and the cushion portion 47, or cracks can easily occur on the outer circumferential surface of the cushion portion 47. This has resulted in a problem of low durability of the striking surface.

[0005] The present invention has been made to solve the above-mentioned problems, and has as its object to provide a percussion instrument and a method for forming a striking surface that can improve the durability of the striking surface. [Means for solving the problem]

[0006] To achieve this objective, the percussion instrument of the present invention comprises a first cushion, a membrane-shaped membrane member joined to the front surface of the first cushion to form a striking surface, and a regulating means arranged in a position that overlaps the outer edges of the first cushion and the membrane member in the thickness direction of the membrane member, and when the membrane member is struck, the regulating means regulates deformation that increases the thickness of the outer edge of the first cushion.

[0007] The method for forming a striking surface of the present invention is a method for forming a striking surface of a percussion instrument that includes a first cushion, a membrane-shaped membrane member joined to the front surface of the first cushion, and a regulating means that is positioned in a position that overlaps the outer edges of the first cushion and the membrane member in the thickness direction of the membrane member, and the striking surface is formed by a portion of the membrane member that is located on the inner side of the regulating means. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view of a percussion instrument according to a first embodiment. [Figure 2] FIG. 2 is a perspective view of the percussion instrument with the lifter disassembled. [Figure 3] 3 is a partially enlarged front view of the percussion instrument as seen in the direction of arrow III in FIG. 1. [Figure 4] FIG. 4 is a partially enlarged cross-sectional view of the percussion instrument taken along line IV-IV in FIG. 3. [Figure 5] FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] 5 is a partially enlarged cross-sectional view of the percussion instrument showing a state in which the striking surface of the attachment is struck by a beater, following the state shown in FIG. 4. FIG. [Figure 9] FIG. 2(a) is a partially enlarged front view of the percussion instrument of the second embodiment, and FIG. 2(b) is a partially enlarged front view of the percussion instrument of the third embodiment. [Figure 10] FIG. 10 is an exploded perspective view of a percussion instrument according to a fourth embodiment. [Figure 11]FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Preferred embodiments will now be described with reference to the accompanying drawings. First, the overall configuration of a percussion instrument 1 according to a first embodiment will be described with reference to Fig. 1. Fig. 1 is a perspective view of the percussion instrument 1 according to the first embodiment.

[0010] In the following explanation, the front side of the percussion instrument 1 as seen from the performer's side will be referred to as the front (front side) of the percussion instrument 1, and the opposite side will be referred to as the rear side of the percussion instrument 1. Furthermore, the left side as seen from the performer's side will be referred to as the left side of the percussion instrument 1, and the opposite side will be referred to as the right side of the percussion instrument 1.

[0011] As shown in Figure 1, percussion instrument 1 is a bass drum in which the opening at the front end (axial end) of a cylindrical shell 2 is covered with a head 3. A rod-shaped stand 4 that slopes downward is attached to the outer periphery of the shell 2 (body) on the rear side of the shell 2. A pair of stands 4 are provided on both the left and right sides of the shell 2, and this pair of stands 4 supports the rear end of the shell 2 on the installation surface.

[0012] The head 3 is formed into a disk shape using a synthetic resin film and is attached to the shell 2 by a circular hoop 5. U-shaped fixtures 6 are hooked onto the hoop 5 at multiple points around the circumference. A through hole (not shown) is formed in the fixture 6 at a location on the outer periphery of the hoop 5, and a tension bolt 7 is inserted into this through hole. A plurality of lugs 8 are provided on the outer periphery of the shell 2, lined up in the circumferential direction. With the outer edge of the head 3 hooked onto the hoop 5, tension is applied to the head 3 by screwing the tension bolt 7 into the lugs 8.

[0013] An attachment 10 is fixed to the head 3 by a plurality of fixing devices 9. The fixing structure using these fixing devices 9 and the detailed configuration of the attachment 10 will be described later, but the attachment 10 is fitted into a circular through-hole 3a formed in the head 3, and is struck by a foot pedal 100.

[0014] The foot pedal 100 includes a base plate 101 that is placed on a surface to be placed on, and a footboard 102 is pivotally supported at the base end (the end closest to the player) of the base plate 101. When the player steps on the footboard 102, the beater 103 rotates and strikes the attachment 10 (performing the percussion instrument 1). A clamp 104 is provided on the tip side of the base plate 101, and when the percussion instrument 1 is to be played, the clamp 104 is attached to the lifter 20 of the percussion instrument 1.

[0015] Next, the detailed configuration of the lifter 20 will be described with reference to Figures 1 and 2. Figure 2 is a perspective view of the percussion instrument 1 with the lifter 20 disassembled.

[0016] 1 and 2, the lifter 20 includes a fixing member 21 fixed to the shell 2 and an attachment member 22 attached to the fixing member 21. Each of the fixing member 21 and the attachment member 22 (lifter 20) has a symmetrical shape.

[0017] The fixing member 21 has a pair of fixing portions 21a (see FIG. 2) spaced apart on the left and right (in the circumferential direction of the outer peripheral surface of the shell 2). The fixing portion 21a is formed in a rectangular flat plate shape, and a through hole 21a1 is formed in the center of the fixing portion 21a. A bolt 23 is inserted into the through hole 21a1 and fastened to the shell 2, thereby attaching the fixing member 21 (the pair of fixing portions 21a) to the shell 2. Although not shown in the drawings, a resin spacer is sandwiched between the fixing portion 21a and the outer peripheral surface of the shell 2.

[0018] Hanging portion 21b hangs downward from the front ends (ends on the player's side) of pair of fixing portions 21a, and bent portion 21c bends forward from both left and right ends of hanging portion 21b. Female threaded hole 21c1 is formed at the front end (forward of the center in the front-to-rear direction) of bent portion 21c, and mounting member 22 is attached to fixing member 21 by bolt 24 fastened to female threaded hole 21c1 (see FIG. 1 for this attached state).

[0019] The mounting member 22 includes a mounting portion 22a extending horizontally and a pair of fastening portions 22b bending upward from both the left and right ends of the mounting portion 22a. A long hole 22b1 (see FIG. 2) extending in the front-rear direction is formed in the fastening portion 22b, and a bolt 24 inserted into this long hole 22b1 is fastened to an internally threaded hole 21c1 of the fixing member 21, thereby fixing the mounting member 22 to the fixing member 21. On the other hand, when the bolt 24 is loosened, the fastening portion 22b (mounting member 22) can be slid along the long hole 22b1 to adjust the fastening position of the fastening portion 22b relative to the bending portion 21c in the front-rear direction.

[0020] Next, a case where a foot pedal 100 is attached to the lifter 20 will be described with reference to Figures 3 and 4. Figure 3 is a partially enlarged front view of the percussion instrument 1 as viewed in the direction of arrow III in Figure 1, and Figure 4 is a partially enlarged cross-sectional view of the percussion instrument 1 taken along line IV-IV in Figure 3.

[0021] 3, the shape of the clamp 104 of the foot pedal 100 that grips the mounting member 22 (mounting portion 22a) is shown schematically and hatched. Also, in FIG. 4, the mounting fixture 6 of the hoop 5 (see FIG. 3) is not shown.

[0022] 3 and 4, when attaching the foot pedal 100 to the percussion instrument 1, the attachment portion 22a is clamped from above and below by the clamp 104. With the foot pedal 100 attached to the attachment portion 22a, the front end of the percussion instrument 1 is supported on a mounting surface G, such as a floor, via the foot pedal 100. As described above, the rear end of the percussion instrument 1 is supported on the mounting surface G by the stand 4 (see FIG. 1).

[0023] When the foot pedal 100 is attached to the attachment portion 22a, the foot pedal 100 may interfere with the percussion instrument 1 (head 3 or hoop 5) or the striking position of the beater 103 (see FIG. 4) may not be appropriate. In such cases, the bolt 24 is loosened and the fastening portion 22b is slid back and forth relative to the bent portion 21c to adjust the relative positions of the percussion instrument 1 and the foot pedal 100 in the front-to-rear direction.

[0024] A known prior art for this type of percussion instrument 1 is a technique for fastening a bolt from the underside of a mounting member to which a foot pedal is attached (for example, the drum connecting member 23 in JP 2014-071196 A). However, with this prior art, fastening the bolt requires inserting a hand (or a tool) into the narrow space between the installation surface and the lifter, or turning the percussion instrument upside down. This makes it time-consuming to adjust the relative positions of the percussion instrument and the foot pedal.

[0025] In contrast, in this embodiment, fastening portions 22b are provided on both the left and right sides of mounting portion 22a to which foot pedal 100 is attached, and these fastening portions 22b are fastened to fixing member 21 (bent portion 21c) by bolts 24. As a result, even when percussion instrument 1 is placed on placement surface G, relatively large spaces S (see FIG. 3) formed on both the left and right sides of mounting portion 22a (on the sides of lifter 20) can be used to fasten bolts 24. In other words, the relative positions of percussion instrument 1 and foot pedal 100 can be easily adjusted without turning percussion instrument 1 upside down.

[0026] When the fixing member 21 and the mounting member 22 are fastened together by the bolt 24, the side surface of the bent portion 21c facing outward in the left-right direction comes into contact with the side surface of the fastening portion 22b facing inward in the left-right direction. Hereinafter, these side surfaces will be referred to as "fastening surfaces," and the fastening surfaces of the bent portion 21c and fastening portion 22b on the left side of the lifter 20 and the fastening surfaces of the bent portion 21c and fastening portion 22b on the right side will be collectively referred to as the "left and right fastening surfaces," etc.

[0027] In this embodiment, the left and right fastening surfaces are inclined relative to the vertical direction, but even if the left and right fastening surfaces are planes along the vertical direction, it is possible to perform the fastening work of the bolt 24 by utilizing the wide space S (see Figure 3) on the left and right sides of the lifter 20.

[0028] However, if the left and right fastening surfaces of the lifter 20 are configured as planes along the vertical direction (the left and right fastening surfaces face each other in parallel), the axes of the left and right bolts 24 will coincide (be aligned in a straight line), and the mounting member 22 may rotate around the bolt 24 due to vibrations generated when the foot pedal 100 is pressed.

[0029] If the mounting member 22 rotates around the bolt 24, the relative positions of the percussion instrument 1 and the foot pedal 100 will shift during performance, reducing the playability of the percussion instrument 1. Furthermore, if the mounting member 22 rotates around the bolt 24, the bolt 24 will loosen, making the mounting member 22 more likely to rattle relative to the fixing member 21. This also reduces the playability of the percussion instrument 1.

[0030] In order to prevent such rotation of the mounting member 22, it is conceivable to fasten each of the left and right fastening surfaces with two bolts 24 (providing a total of four bolts 24 on the left and right fastening surfaces). However, in a configuration in which multiple bolts 24 are provided on the left and right fastening surfaces, the work of fastening the bolts 24 is time-consuming and the lifter 20 becomes larger.

[0031] In contrast, in this embodiment, the left and right fastening surfaces of the lifter 20 are not parallel to the vertical direction, and the left and right bolts 24 fasten the fastening portions 22b at positions where their axial centers do not coincide with each other. In other words, the axial centers of the bolts 24, one on each of the left and right fastening surfaces, are not aligned in a straight line.

[0032] As a result, rotation of the mounting member 22 relative to the fixed member 21 (rotation of the mounting member 22 around the bolt 24) can be restricted by the engagement between the bolt 24 and the fastening portion 22b and between the left and right fastening surfaces (the bent portion 21c and the fastening portion 22b). This prevents the relative position of the percussion instrument 1 and the foot pedal 100 from shifting during performance, improving the playability of the percussion instrument 1. Furthermore, because the mounting member 22 does not rotate around the bolt 24, loosening of the bolt 24 due to that rotation can be prevented. This reduces the likelihood of rattle of the mounting member 22 relative to the fixed member 21 (the bent portion 21c), improving the playability of the percussion instrument 1.

[0033] Here, percussion instruments 201 and 301 (see FIG. 9) of second and third embodiments described below are exemplified as other examples of a configuration that can facilitate the tightening of the bolt 24. As will be described in detail later, in the percussion instrument 201 of the second embodiment (see FIG. 9(a)), the bolt 24 is tightened by utilizing the space S between the hoop 5 and the bent portion 221c, and in the percussion instrument 301 of the third embodiment (see FIG. 9(b)), the bolt 24 is tightened by utilizing the space S between the fastening portion 322b and the installation surface G.

[0034] However, in a configuration in which the bolt 24 is fastened in the vertical direction, as in the percussion instruments 201 and 301 of the second and third embodiments, the hoop 5 and the installation surface G may interfere with the hands or tools used to fasten the bolt 24.

[0035] In contrast, in this embodiment, the left and right fastening surfaces (fastening portions 22b) of the lifter 20 are inclined upward from the mounting portion 22a outward in the left-right direction (see FIG. 3), so the bolt 24 can be fastened from the side of the fastening portion 22b. As a result, compared to the percussion instruments 201 and 301 of the second and third embodiments, the hoop 5 and the installation surface G are less likely to interfere with the hands or tools used to fasten the bolt 24. This improves the workability of the bolt 24 fastening operation.

[0036] Furthermore, the axis of bolt 24 is located above the vertical center C1 of the left and right fastening surfaces. That is, bolt 24 fastens fixing member 21 (bent portion 21c) and fastening portion 22b above the vertical center C1 of the fastening surfaces, so the installation surface is less likely to interfere with the hands or tools fastening bolt 24, compared to, for example, a case where bolt 24 is provided below the vertical center C1 of the fastening surfaces. This also improves the workability of the bolt 24 fastening operation.

[0037] In this embodiment, the inclination angle of the left and right fastening surfaces (bent portion 21c and fastening portion 22b) relative to the vertical direction is 25°, but the inclination angle of these fastening surfaces is preferably 5° to 40°. This angle range can prevent the percussion instrument 1 and the installation surface from interfering with the hands and tools tightening bolt 24. Furthermore, the inclination angle of the left and right fastening surfaces is more preferably 15° to 30°, and this angle range can more effectively prevent the percussion instrument 1 and the installation surface from interfering with the hands and tools tightening bolt 24.

[0038] After fastening the fixing member 21 and the mounting member 22 with the bolt 24, the percussion instrument 1 is played by stepping on the foot pedal 100. During this performance, a load (vibration) is likely to act in the vertical direction on the mounting portion 22a to which the foot pedal 100 is attached. If this load acts repeatedly on the mounting portion 22a during performance, the bolt 24 may become loose.

[0039] That is, as described above, although the lifter 20 of this embodiment is configured to generally prevent rotation of the mounting member 22 around the bolt 24 as an axis, if the load during playing is repeatedly applied to the mounting portion 22a (mounting member 22), the bolt 24 may gradually loosen.

[0040] In contrast to this, in this embodiment, the bent portions 21c (fixing members 21) are fastened to the inside of the fastening portions 22b in the left-right direction, so that even if the bolts 24 loosen or fall off, the bent portions 21c (fixing members 21) can be held inside the left and right fastening portions 22b. In other words, even if the bolts 24 fall off during performance, the fixing members 21 can remain supported from below by the mounting members 22, so that the performance of the percussion instrument 1 can continue.

[0041] Furthermore, since a load during performance is likely to act on the mounting portion 22a, in this embodiment, the rigidity of the mounting portion 22a is ensured by overlapping (joining) the reinforcing portion 22c on the underside of the mounting portion 22a. The mounting portion 22a and the reinforcing portion 22c are integrally formed by bending a single metal plate (as shown in FIG. 4, the reinforcing portion 22c is folded back from the rear end of the mounting portion 22a to the underside of the mounting portion 22a). Furthermore, since the mounting portion 22a and the fastening portion 22b are also integrally formed by bending a metal plate, the mounting member 22 including these portions 22a to 22c can be easily formed from a single metal plate.

[0042] Furthermore, the load generated during performance also acts on fixed member 21 via mounting member 22. In this case, if bent portions 221c, 321c are bent from the lower or upper ends of hanging portions 221b, 321b, as in percussion instruments 201, 301 of second and third embodiments (see FIG. 9) described below, the load generated when foot pedal 100 is depressed acts on bent portions 221c, 321c in the thickness direction. This makes it easier for bent portions 221c, 321c to bend, or deformation to occur in the bent portions between hanging portions 221b, 321b and bent portions 221c, 321c.

[0043] That is, in the configurations of the second and third embodiments described below, the rigidity of the fixing members 221, 321 against the load acting from the foot pedal 100 is reduced, so that the relative positions of the percussion instrument 1 and the foot pedal 100 are likely to shift during performance.

[0044] In contrast, in this embodiment, fastening portion 22b is fastened to bent portion 21c that bends forward from both the left and right ends of hanging portion 21b (the plate surfaces of bent portion 21c are oriented left and right), so that it is possible to prevent a load in the vertical direction during performance from acting in the thickness direction of bent portion 21c (the bending direction of bent portion 21c relative to hanging portion 21b). This makes it possible to prevent bending of bent portion 21c and deformation of the bent portion between hanging portion 21b and bent portion 21c. In other words, it is possible to improve the rigidity of fixing member 21 against the load acting from foot pedal 100, so that the relative position of percussion instrument 1 and foot pedal 100 is less likely to change during performance. This improves the playability of percussion instrument 1.

[0045] Furthermore, since fixing portion 21a, hanging portion 21b, and bent portion 21c that constitute fixing member 21 are integrally formed by bending a metal plate, fixing member 21 can be easily formed from a single metal plate.

[0046] Next, a description will be given of the configuration of the attachment 10 that is struck by the beater 103 (see FIG. 4) when playing the percussion instrument 1. FIG. 5 is an exploded perspective view of the attachment 10.

[0047] As shown in FIG. 5, the attachment 10 has a disk-shaped membrane member 11 whose front surface forms a striking surface 11a, and a cushion 12 is attached to the rear surface of the membrane member 11 to absorb the impact of hitting the striking surface 11a.

[0048] The membrane member 11 is formed in a membrane shape using a net-like material (mesh) made of woven synthetic fibers, but the material of the membrane member 11 may be a material that is harder (has a higher hardness) than the cushion 12. Therefore, for example, the membrane member 11 may be formed using a synthetic resin film. The cushion 12 is formed in a disk shape that is thicker than the membrane member 11, and the membrane member 11 and the cushion 12 have the same diameter. In other words, the outer shapes (shapes when viewed from the front-to-back direction) of the membrane member 11 and the cushion 12 are the same shape.

[0049] The cushion 12 is made of a foamed synthetic resin such as polyurethane foam. However, the cushion 12 may be made of a resin such as rubber or elastomer (synthetic resin), or a foamed material using such a resin (hereinafter referred to as "elastic material"), as long as it has a predetermined flexibility.

[0050] The rear surface of the cushion 12 is supported by a support film 13. The support film 13 is formed in a disk shape using a mesh woven from synthetic fibers or a film made of synthetic resin, and a circular frame 14 is fixed to the outer edge of the support film 13. The frame 14 is formed using a resin material, and the support film 13 and the frame 14 are integrally formed by molding. Note that the frame 14 may be formed using a material other than resin (for example, a metal such as aluminum or iron), and the frame 14 may be joined to the support film 13 by adhesive or the like.

[0051] A plurality of press-fit holes 14a (six holes in this embodiment) are formed at equal intervals in the circumferential direction on the outer edge of the frame 14. Fixing devices 9 (see FIG. 6), which will be described later, are fitted into the press-fit holes 14a.

[0052] A disk-shaped cushion 15 made of an elastic material is placed on the rear surface of the support film 13, and a mounting plate 16 is placed on the rear surface of the cushion 15. The mounting plate 16 is made of a resin or metal material and has a disk-shaped sensor 17 (piezoelectric element) attached to the center of the mounting plate 16 with cushioning double-sided tape.

[0053] A plurality of press-fit holes 16a are formed on the outer edge of the mounting plate 16 at positions corresponding to the press-fit holes 14a of the frame 14. The attachment 10 is attached to the head 3 by fasteners 9 (see FIG. 6) that are press-fitted into these press-fit holes 14a, 16a.

[0054] The mounting structure of this attachment 10 will be described with reference to Figures 6 and 7. Figure 6 is an exploded perspective view of the percussion instrument 1, and Figure 7 is an enlarged partial cross-sectional view of the percussion instrument 1. Note that Figure 7 shows a cross section cut along a plane including the axis of the fixing device 9.

[0055] As shown in Figure 6, the head 3 of the percussion instrument 1 is attached to the shell 2 by the hoop 5 and the mounting fixture 6 as described above, and the head 3 has a through hole 3a formed therein for fitting the membrane member 11 and cushion 12 of the attachment 10.

[0056] A plurality of (six in this embodiment) press-fit holes 3b are formed around the through hole 3a at equal intervals in the circumferential direction, and fasteners 9 are press-fitted into the press-fit holes 3b. The fasteners 9 are pins made of elastomer or rubber.

[0057] Additionally, a plurality of (six in this embodiment) resin plates 30 are bonded to the rear surface of the head 3 to reinforce the periphery of the through hole 3a. The plurality of plates 30 are formed by equally dividing an annular film in the circumferential direction. That is, each of the plurality of plates 30 is formed in a fan shape, and the through hole 3a is surrounded by the plurality of fan-shaped plates 30 over the entire circumference. The plates 30 are formed with press-fit holes 30a into which the fixing device 9 is press-fitted.

[0058] 7, the fixture 9 includes a disk-shaped head 9a and a shaft 9b that protrudes in the thickness direction (rearward) of the head 9a. The diameter of the head 9a is larger than the diameter of the press-fit hole 3b of the head 3.

[0059] The shaft portion 9b is formed with a protrusion 9c for hooking the head 3 and the plate 30, and a groove 9d for hooking the press-fit holes 14a, 16a of the frame 14 and the mounting plate 16. The protrusion 9c is an annular protrusion extending in the circumferential direction of the shaft portion 9b. A gap equal to the film thickness of the head 3 and the plate 30 is formed between the head 9a and the protrusion 9c, and the outer diameter of the protrusion 9c is slightly larger than the diameters of the press-fit holes 3b, 30a of the head 3 and the plate 30. Therefore, by press-fitting the protrusion 9c into the press-fit holes 3b, 30a, the head 3 and the plate 30 are hooked between the head 9a and the protrusion 9c.

[0060] The groove 9d is an annular recess extending in the circumferential direction of the shaft portion 9b, and in the region where the groove 9d is formed, the diameter of the shaft portion 9b is formed to be the same as the inner diameter of the press-fit holes 14a, 16a of the frame 14 and the mounting plate 16. Therefore, by press-fitting the shaft portion 9b into the press-fit holes 14a, 16a, the frame 14 and the mounting plate 16 are hooked into the groove 9d. In this way, the attachment 10 is attached to the rear surface of the head 3 by the fixing device 9.

[0061] When the attachment 10 is attached, the support film 13, frame 14, cushion 15, and mounting plate 16 form a support that supports the film member 11 and cushion 12 on the rear side of the head 3. The film member 11 and cushion 12, which are interposed between the support and the head 3, are pressed against the periphery of the through-hole 3a of the head 3 via the plate 30. This configuration improves the durability of the film member 11 and cushion 12.

[0062] The detailed configuration of the attachment 10 will be described with reference to Fig. 8. Fig. 8 is a partially enlarged cross-sectional view of the percussion instrument 1, showing a state in which the striking surface 11a of the attachment 10 is struck by the beater 103, following the state shown in Fig. 4.

[0063] 8, the membrane member 11 (striking surface 11a) of the attachment 10 is struck by the beater 103 of the foot pedal 100, and the impact at the time of this strike is absorbed by the cushion 12. Therefore, the striking sound generated when the membrane member 11 is struck can be reduced.

[0064] In the prior art for this type of percussion instrument 1 (for example, International Publication No. 2017 / 038226), when the membrane member 11 is struck, the outer edge of the cushion 12 is deformed so that it swells (increases in thickness), which causes problems such as peeling at the adhesive portion between the membrane member 11 and the cushion 12 or cracks on the outer surface of the cushion 12.

[0065] In contrast, in this embodiment, the outer edge portions of the membrane member 11 and cushion 12 are arranged to overlap with the periphery of the through-hole 3a of the head 3 in the front-to-rear direction (the striking surface 11a is formed by the portion of the membrane member 11 located on the inner periphery of the through-hole 3a of the head 3). This allows the head 3 to restrict the swelling deformation of the outer edge of the cushion 12 when the membrane member 11 is struck by the beater 103. This prevents peeling from occurring at the bonded portion between the membrane member 11 and the cushion 12 and cracks from occurring on the outer periphery of the cushion 12. This improves the durability of the striking surface 11a (the struck body consisting of the membrane member 11 and cushion 12).

[0066] Furthermore, when the attachment 10 is attached to the head 3, the distance between the head 3 (plate 30) and the support film 13 is smaller than the thickness of the film member 11 and the cushion 12. Therefore, before the striking surface 11a is struck, the outer edge portion of the cushion 12 is compressed by the head 3. This effectively prevents the outer edge portion of the cushion 12 from expanding and deforming, thereby improving the durability of the film member 11 and the cushion 12.

[0067] Furthermore, since the outer edge portion of the cushion 12 is compressed by the head 3, the head 3 can have the function of restricting the swelling of the outer edge of the cushion 12 in addition to the function of attaching the attachment 10.

[0068] Furthermore, a plurality of plates 30 that are harder (higher in hardness) than the head 3 (membrane member 11) are sandwiched between the head 3 and the membrane member 11. These plates 30 are arranged in a circular pattern around the through-hole 3a, so that the swelling deformation of the outer edge of the cushion 12 can be uniformly restricted over the entire circumference of the cushion 12. This improves the durability of the membrane member 11 and the cushion 12. Furthermore, by changing the thickness of the plates 30, the amount of compression of the cushion 12 can be adjusted.

[0069] Furthermore, since multiple plates 30 are attached around the through-hole 3a of the head 3, the rigidity of the head 3 can be increased by the plates 30. This makes it possible to suppress damage to the head 3 that presses down on the membrane member 11 and the cushion 12, and also makes it possible to effectively restrict deformation due to swelling of the outer edge of the cushion 12 by the head 3 and the plates 30. This improves the durability of the head 3, membrane member 11, and cushion 12.

[0070] In this way, when the purpose is to increase the rigidity around the through-hole 3a by the plate 30, it is possible to integrally form a plurality of plates 30, and attach one annular plate 30 to the periphery of the through-hole 3a of the head 3. However, with such a configuration, the plate 30 is prone to bending, making it difficult to properly attach the plate 30 to the head 3.

[0071] Furthermore, in a configuration in which one annular plate 30 is cut out from a resin plate as a material, the number of plates 30 that can be cut out from the resin plate decreases (all of the resin plate cut out on the inner periphery of the annular plate 30 becomes waste material), which increases the manufacturing cost of the plate 30.

[0072] In contrast to this, in this embodiment, multiple (annular sector-shaped) plates 30 are arranged in a circular ring shape around the through-hole 3a. This makes it possible to suppress deflection of the plate 30 compared to when the plate 30 is formed into a single circular ring shape as described above, and therefore the plate 30 can be properly attached to the head 3. This improves the workability of attaching the plate 30.

[0073] Furthermore, when cutting out multiple (annular sector-shaped) plates 30 from a resin plate as a material, it is possible to cut out a larger number of plates 30 from the resin plate (reducing the amount of resin plate that becomes waste material) compared to cutting out a single annular plate 30 as described above. Therefore, the manufacturing cost of the plates 30 can be reduced.

[0074] Vibrations generated when the membrane member 11 (striking surface 11a) is struck are detected by a sensor 17 attached to a mounting plate 16, and a musical sound signal based on the detection result is generated by a sound source (not shown). The musical sound signal generated by the sound source is output to an amplifier and a speaker (neither of which are shown), and electronic musical sounds are emitted from the speaker.

[0075] In this way, when detecting an impact on the striking surface 11a using the sensor 17, the above-mentioned conventional technology (for example, International Publication No. 2017 / 038226) did not have a member that compresses the outer edge of the cushion 12 as in this embodiment, and therefore had the following problems.

[0076] That is, in a configuration in which the outer edge of the cushion 12 is not compressed, deformation occurs more easily on the outer edge side of the cushion 12 (higher shock absorption capacity) than near the center of the cushion 12. Therefore, when the outer periphery of the striking surface 11a (membrane member 11) is struck, the output value of the sensor 17 is likely to be smaller than when the center of the striking surface 11a is struck. In other words, the sensitivity distribution of the sensor 17 to strikes on the striking surface 11a becomes uneven.

[0077] If the sensitivity distribution of the sensor 17 is uneven, when the striking surface 11a is struck with the twin-pedal foot pedal 100, different musical sounds (e.g., sounds with different volumes) are likely to be generated when the left and right beaters 103 strike the striking surface 11a. To resolve this problem in musical sound generation, it is necessary to fine-tune the attachment position of the foot pedal 100 to the percussion instrument 1 so that the center of the striking surface 11a (sensor 17) is positioned midway between the left and right beaters 103. This has led to the problem of time-consuming attachment of the foot pedal 100.

[0078] In contrast, in this embodiment, the outer edge of the cushion 12 is compressed, which reduces the difference in ease of deformation (shock absorption) between the center and outer edge of the cushion 12. This allows for a uniform sensitivity distribution of the sensor 17 to strikes on the striking surface 11a (membrane member 11). Therefore, when using a twin-pedal foot pedal 100, for example, appropriate musical tones are likely to be generated even if the mounting position of the foot pedal 100 (the striking positions of the left and right beaters 103) is offset to the left or right from the center of the striking surface 11a. In other words, since there is no need to fine-tune the mounting position of the foot pedal 100 to the percussion instrument 1, the installation work of the foot pedal 100 can be easily performed.

[0079] In this way, when detecting a strike on membrane member 11 using sensor 17 attached to mounting plate 16, it is possible to omit cushion 15, for example. That is, attachment 10 of this embodiment comprises a membrane-like support film 13 that is placed on the rear side of cushion 12, and a frame 14 that is connected to the outer edge of support film 13, with mounting plate 16 attached to frame 14. Therefore, even if cushion 15 is omitted, for example, vibrations generated when membrane member 11 is struck can be transmitted to sensor 17 via cushion 12, support film 13, frame 14, and mounting plate 16.

[0080] However, if cushion 15 is omitted, when mounting plate 16 itself vibrates due to vibration transmitted from frame 14, the vibration of mounting plate 16 cannot be damped quickly. If the damping of the vibration of mounting plate 16 is slow, the vibration may be erroneously detected by sensor 17, and therefore, the sensor 17 will not be able to accurately detect an impact on membrane member 11.

[0081] In contrast, in this embodiment, the cushion 15 sandwiched between the support film 13 and the mounting plate 16 is provided, so that the vibration of the mounting plate 16 can be quickly damped by the cushion 15. This allows the sensor 17 to accurately detect an impact on the film member 11.

[0082] As described above, cushion 15 is required to have the function of absorbing vibrations of mounting plate 16, but cushion 12 is required to have the function of absorbing the impact when membrane member 11 is struck, as well as the function of providing a hitting feel when membrane member 11 is struck (a hitting feel similar to that of an acoustic drum). Therefore, in this embodiment, cushion 12 is formed using a foam material that is denser (harder) than cushion 15. This allows cushion 12 to absorb the impact when membrane member 11 is struck, while improving the hitting feel when membrane member 11 is struck.

[0083] On the other hand, the hitting feel when hitting the membrane member 11 can be largely ensured by the cushion 12 and the support membrane 13, so the cushion 15 is not required to have the function of providing a hitting feel, but rather to mainly function only to dampen the vibration of the mounting plate 16. Therefore, by forming the cushion 15 from a low-density foam material, it is possible to reduce the cost (weight) of the cushion 15 while still providing the cushion 15 with the required function (damping the vibration of the mounting plate 16).

[0084] Furthermore, because the sensor 17 is sandwiched between the cushion 15 and the mounting plate 16, the sensitivity of the sensor 17 to a strike on the membrane member 11 can be improved (the maximum output value of the sensor 17 can be increased) compared to when the sensor 17 is attached to the rear surface of the mounting plate 16. This is thought to be because part of the vibration when the membrane member 11 is struck is transmitted to the sensor 17 via the cushion 12, the support film 13, and the cushion 15. This allows the sensor 17 to detect a strike on the membrane member 11 with high accuracy.

[0085] Here, the direction of impact by the beater 103 is often a downward inclined direction toward the rear lower side of the percussion instrument 1 (toward the lower left in FIG. 8), and when the membrane member 11 is struck in this direction, the membrane member 11 and the cushion 12 are pushed down (pulled). Therefore, if the overlapping amount La between the upper end side of the membrane member 11 and the head 3 is small, the outer edges of the membrane member 11 and the cushion 12 are likely to be exposed (protrude) to the inner periphery side of the through-hole 3a of the head 3 when struck by the beater 103.

[0086] In contrast to this, the present embodiment is configured to prevent such exposure of the membrane member 11 and the cushion 12. This configuration will be explained by returning to Fig. 5. In Fig. 5, a circle corresponding to the through-hole 3a of the head 3 is shown by a two-dot chain line.

[0087] 5, the radial dimensions of the membrane member 11 and the cushion 12, based on the center C2 of the through hole 3a, are largest in a region R on the upper end side of the membrane member 11 and the cushion 12. That is, the overlapping area La between the head 3 and the membrane member 11 (cushion 12) in the region R including the upper edge of the membrane member 11 is larger than the overlapping area Lb in other regions. These overlapping areas La and Lb indicate the range where the peripheral edge of the through hole 3a of the head 3 overlaps with the membrane member 11 and the cushion 12 when viewed in the front-to-rear direction (when viewed in the thickness direction of the membrane member 11).

[0088] In this way, by increasing the overlap La with the head 3 in the region R including the upper edge of the membrane member 11 (cushion 12), it is possible to prevent the outer edges of the membrane member 11 and the cushion 12 from being exposed (protruding) to the inner periphery of the through-hole 3a even when the membrane member 11 and the cushion 12 are pushed downward by the impact of the beater 103 (see FIG. 8). By preventing the membrane member 11 and the cushion 12 from being exposed in this way, it is possible to prevent interference with the performance of the percussion instrument 1 (for example, it is possible to eliminate the need to reattach the attachment 10 to the head 3).

[0089] The dimension of the overlap La between the head 3 and the membrane member 11 (cushion 12) and the circumferential range R of the region where the overlap La is relatively large may be appropriately set so that the membrane member 11 and the cushion 12 are not exposed to the inner circumferential side of the through hole 3a when struck by the beater 103.

[0090] Next, percussion instruments 201, 301 of second and third embodiments will be described with reference to Fig. 9. In the first embodiment described above, bent portions 21c are formed on both left and right ends of hanging portion 21b of lifter 20, but in the second and third embodiments, bent portions 221c, 321c are formed on both top and bottom ends of hanging portions 221b, 321b will be described. Note that the same parts as in the first embodiment described above are designated by the same reference numerals, and their description will be omitted.

[0091] FIG. 9(a) is a partially enlarged front view of a percussion instrument 201 according to the second embodiment, and FIG. 9(b) is a partially enlarged front view of a percussion instrument 301 according to the third embodiment.

[0092] 9(a), the lifter 220 of the percussion instrument 201 of the second embodiment includes a fixing member 221 that is fixed to the shell 2 (see FIG. 1) and an attachment member 222 that is attached to the fixing member 221. The fixing member 221 and the attachment member 222 (lifter 220) each have a symmetrical shape.

[0093] The hanging portion 221b of the fixing member 221 has the same configuration as the hanging portion 21b of the first embodiment (see Figure 3), except that both left and right ends (for example, the left end in Figure 9(a)) are extended so as to slope downward outward in the left-right direction.

[0094] Bent portion 221c is bent forward from the lower end of hanging portion 221b, which is located outboard of mounting portion 22a in the left-right direction. Slot 221c1 extending in the front-rear direction is formed in bent portion 221c, and bolt 24 is inserted into slot 221c1 from above.

[0095] The mounting member 222 has the same configuration as the mounting member 22 of the first embodiment (see FIG. 3) except that both left and right ends of the mounting portion 22a (for example, the left end in FIG. 9(a)) are extended outward in the left-right direction to form fastening portions 222b. An internally threaded hole 222b1 is formed in the fastening portion 222b, and the mounting member 222 is fixed to the fixing member 221 by fastening a bolt 24 inserted into an elongated hole 221c1 of the fixing member 221 to the internally threaded hole 222b1.

[0096] In this embodiment as well, fastening portions 222b are provided on both the left and right sides of mounting portion 22a to which clamp 104 (foot pedal 100) is attached, and these fastening portions 222b are fastened to fixing member 221 (bent portion 221c) by bolts 24. As a result, even when percussion instrument 201 is placed on placement surface G, the bolts 24 can be fastened by utilizing the relatively large spaces S formed on both the left and right sides of mounting portion 22a (between bent portion 221c and hoop 5). In other words, the relative positions of percussion instrument 201 and foot pedal 100 can be easily adjusted without turning percussion instrument 201 upside down.

[0097] Furthermore, the bent portion 221c and the fastening surface between the fastening portions 222b are flat surfaces extending horizontally, and although not shown, the pair of bolts 24 provided on the left and right fasten the fastening portions 222b at positions where their axes do not coincide. This prevents the mounting member 222 from rotating around the bolt 24, even if vibrations caused by pressing down on the foot pedal 100 act on the mounting member 222. This prevents the relative positions of the percussion instrument 201 and the foot pedal 100 from shifting during performance, improving the playability of the percussion instrument 201. Furthermore, because the mounting member 222 does not rotate around the bolt 24, loosening of the bolt 24 is prevented. This reduces the likelihood of rattle of the mounting member 222 relative to the fixing member 221, improving the playability of the percussion instrument 201.

[0098] As shown in Figure 9(b), the lifter 320 of the percussion instrument 301 of the third embodiment includes a fixing member 321 that is fixed to the shell 2 (see Figure 1), and an attachment member 322 that is attached to the fixing member 321. The fixing member 321 and the attachment member 322 (lifter 320) each have a symmetrical shape.

[0099] The hanging portion 321b of the fixing member 321 has the same configuration as the hanging portion 21b of the first embodiment (see FIG. 3) except that both left and right ends (for example, the left end in FIG. 9(b)) are extended outward in the left-right direction.

[0100] Bent portion 321c is bent forward from the upper end of hanging portion 321b, which is located outboard of mounting portion 22a in the left-right direction. Internally threaded hole 321c1 is formed in bent portion 321c, and bolt 24 is fastened into internally threaded hole 321c1 from below.

[0101] The mounting member 322 has the same configuration as the mounting member 22 of the first embodiment (see Figure 3), except that it has a bending portion 322d that bends upward from both the left and right ends of the mounting portion 22a (for example, the left end in Figure 9(a)) and a fastening portion 322b that bends outward in the left-right direction from the upper end of 322d.

[0102] The fastening portion 322b is formed with an elongated hole 322b1 extending in the front-rear direction, and the mounting member 322 is fixed to the fixing member 321 by fastening a bolt 24 inserted into this elongated hole 322b1 to an internally threaded hole 321c1 of the fixing member 321.

[0103] In this embodiment as well, fastening portions 322b are provided on both the left and right sides of the mounting portion 22a to which the clamp 104 (foot pedal 100) is attached, and these fastening portions 322b are fastened to the fixing member 321 (bent portion 321c) by bolts 24. As a result, even when the percussion instrument 301 is placed on the installation surface G, the bolts 24 can be fastened using the relatively large spaces S formed on both the left and right sides of the mounting portion 22a (between the fastening portions 322b and the installation surface G). In other words, the relative positions of the percussion instrument 301 and the foot pedal 100 can be easily adjusted without having to turn the percussion instrument 301 upside down.

[0104] Furthermore, the bent portion 321c and the fastening surface between the fastening portions 322b are flat surfaces extending horizontally. Although not shown, the pair of bolts 24 provided on the left and right fasten the fastening portions 322b at positions where their axes do not coincide. This prevents the mounting member 322 from rotating around the bolt 24, even if vibrations caused by pressing down on the foot pedal 100 act on the mounting member 322. This prevents the relative positions of the percussion instrument 301 and the foot pedal 100 from shifting during performance, improving the playability of the percussion instrument 301. Furthermore, because the mounting member 322 does not rotate around the bolt 24, loosening of the bolt 24 is prevented. This reduces the likelihood of rattle of the mounting member 322 relative to the fixing member 321, improving the playability of the percussion instrument 301.

[0105] Next, a percussion instrument 401 according to a fourth embodiment will be described with reference to Figures 10 and 11. In the first embodiment described above, the outer edge portions of the membrane member 11 and cushion 12 (striking surface 11a) of the attachment 10 are compressed by the head 3 and plate 30. In contrast, in the fourth embodiment, the outer edge portions of the membrane member 11 and cushion 12 (striking surface 11a) are compressed by the head 3 and annular member 440.

[0106] Fig. 10 is an exploded perspective view of a percussion instrument 401 according to the fourth embodiment, and Fig. 11 is an enlarged partial cross-sectional view of the percussion instrument 401. Note that Fig. 11 shows a cross section cut along a plane including the axis of the fixing device 9, and does not show the mounting device 6 (see Fig. 10).

[0107] 10 and 11, the percussion instrument 401 of the fourth embodiment has the same configuration as the percussion instrument 1 of the first embodiment, except that an annular member 440 is provided instead of the plate 30 (see FIG. 6). Thus, similar to the first embodiment, the head 3 of the percussion instrument 401 is attached to the shell 2 by the hoop 5 and the mounting fixture 6, and the attachment 10 is attached to the head 3 by the fixing fixture 9 that is press-fitted into the press-fit hole 3b of the head 3.

[0108] When the attachment 10 is attached to the head 3, the annular member 440 is sandwiched between the head 3 and the attachment 10. The inner diameter of the annular member 440 is formed to be smaller than the diameter of the through-hole 3a of the head 3, while the outer diameter of the annular member 440 is formed to be larger than the diameter of the through-hole 3a.

[0109] 11 , the annular member 440 has an outer circumferential portion 441 that overlaps the front surface of the support film 13 on the outer circumferential side of the cushion 12. The outer diameter of the outer circumferential portion 441 (annular member 440) is formed to be the same as (or slightly smaller than) the inner diameter of the frame 14. The outer circumferential portion 441 extends forward from the support film 13 toward the head 3, and a bent portion 442 bends from the front end of the outer circumferential portion 441 toward the inner circumferential side of the annular member 440. The bent portion 442 is a portion that extends approximately parallel to the head 3, and an inclined portion 443 extends from the inner edge of the bent portion 442 toward the inner circumferential side of the annular member 440.

[0110] The inclined portion 443 is inclined so as to move away from the support film 13 toward the inner periphery of the annular member 440, and the portion on the inner edge side of the inclined portion 443 protrudes through the through-hole 3a toward the front side of the head 3. A protruding portion 444 protrudes forward from the inner edge of the inclined portion 443, and the respective portions 441 to 444 that make up the annular member 440 are integrally formed using a resin material.

[0111] When the attachment 10 is attached to the head 3, the outer edge portion of the cushion 12 is compressed by the head 3 and the annular member 440. The annular member 440 is formed in an annular shape using a material harder than the head 3 (membrane member 11), and therefore can uniformly restrict the swelling deformation of the outer edge of the cushion 12 over the entire circumference of the cushion 12. This improves the durability of the membrane member 11 and the cushion 12.

[0112] Furthermore, the annular member 440 has an inclined portion 443 that is inclined away from the support film 13 toward its inner periphery, and this inclined portion 443 presses down the outer edge portions of the film member 11 and the cushion 12. This allows the amount of compression of the cushion 12 by the annular member 440 (inclined portion 443) to be large on the outer edge side of the cushion 12 and gradually decrease toward the inner periphery side of the cushion 12.

[0113] Therefore, in the region on the outer edge of the cushion 12, the expansion and deformation of the cushion 12 can be effectively suppressed, while the amount of compression of the cushion 12 further inside can be reduced. In the region of the cushion 12 where the amount of compression is small, the cushion 12 is less likely to wear out, and therefore the durability of the cushion 12 can be improved.

[0114] The above has been explained based on the above embodiment, but the present invention is not limited to the above embodiment, and it can be easily inferred that various improvements and modifications are possible within the scope of the present invention.

[0115] In the above embodiments, the percussion instruments 1, 201, 301, and 401 are described as electronic percussion instruments (electronic drums) equipped with the sensor 17, but this is not necessarily limited to this. For example, the percussion instruments 1, 201, 301, and 401 may be percussion instruments that do not have the sensor 17. Furthermore, in the above embodiments, the structure of the lifters 20, 220, and 320 in the percussion instruments 1, 201, 301, and 401 in which the attachment 10 is attached to the head 3 is described, but the structure of the lifters 20, 220, and 320 can also be applied to acoustic bass drums.

[0116] In the above embodiments, the lifters 20, 220, 320 (fixing members 21, 221, 321) are fixed to the outer peripheral surface of the shell 2, but this is not necessarily limited to this. For example, the lifters 20, 220, 320 may be fixed to the hoop 5. In other words, the fixing positions of the lifters 20, 220, 320 relative to the percussion instruments 1, 201, 301, 401 (housings) can be changed as appropriate.

[0117] In the above-described embodiments, the lifters 20, 220, and 320 have symmetrical shapes, but this is not necessarily limited to this. For example, the lifters 20, 220, and 320 may have asymmetrical shapes, and the specific shapes of the lifters 20, 220, and 320 are not limited to the above-described embodiments. That is, the shapes of the lifters 20, 220, and 320 can be modified as appropriate as long as the fastening portions 22b, 222b, and 322b are provided on both the left and right sides of the mounting portion 22a and the fastening portions 22b, 222b, and 322b can be fastened at positions where the axes of the left and right bolts 24 do not coincide.

[0118] In each of the above embodiments, the cases where each part of the fixing members 21, 221, 321 and the mounting members 22, 222, 322 is integrally formed by bending a metal plate have been described, but a part of the fixing members 21, 221, 321 and the mounting members 22, 222, 322 may be formed separately from the other parts.

[0119] In the above embodiments, the membrane member 11 and the cushion 12 (i.e., the struck body that forms the striking surface 11a) are disk-shaped, but this is not necessarily limited to this. The membrane member 11 and the cushion 12 may also be polygonal (e.g., rectangular). In this case, the through-hole 3a of the head 3, the support body (support membrane 13, frame 14, cushion 15, mounting plate 16, etc.), and the annular member 440 may be formed in shapes corresponding to the membrane member 11 and the cushion 12.

[0120] In the above embodiments, the outer edge of the cushion 12 is compressed by the head 3 (the plate 30 and the annular member 440) before the striking surface 11a is struck, but this is not necessarily limited to this. For example, if the head 3 (the plate 30 and the annular member 440) is in contact with at least the membrane member 11 before the striking surface 11a is struck, the head 3 (the plate 30 and the annular member 440) can restrict the swelling of the outer edge of the cushion 12.

[0121] In the above embodiments, the plate 30 and the annular member 440, which are harder than the head 3 (membrane member 11), are provided between the head 3 and the membrane member 11, but this is not necessarily limited to this. For example, the plate 30 and the annular member 440 may be omitted, or a configuration in which the plate 30 and the annular member 440 are used together (the plate 30 is interposed between the head 3 and the annular member 440) may also be used. Furthermore, the plate 30 may be attached to the front surface of the head 3.

[0122] In the above embodiments, the attachment 10 is attached to the head 3, that is, the head 3 restricts the deformation of the outer edge portion of the cushion 12 from expanding, but the present invention is not necessarily limited to this.

[0123] For example, a configuration may be adopted in which a member equivalent to the annular member 440 (having a shape capable of pressing the outer edges of the membrane member 11 and cushion 12) is attached to the frame 14 or formed integrally with the frame 14. In such a configuration, the attachment 10 itself detached from the head 3 can be used as a percussion instrument (or the attachment 10 with the sensor 17 removed can be used as a practice pad), while the member equivalent to the annular member 440 can restrict deformation due to swelling of the outer edge of the cushion 12.

[0124] In the above embodiments, the cases where a plurality of (annular sector-shaped) plates 30 are arranged in an annular shape and the annular member 440 is formed in an annular shape have been described, but this is not necessarily limited to this. For example, a plurality of plates 30 may be integrally formed into a single annular plate 30, or the annular member 440 may be divided into a plurality of pieces in the circumferential direction.

[0125] Furthermore, the shapes of the multiple plates 30 and the annular member 440 are not limited to annular shapes, and can be changed as appropriate as long as they are shapes that can surround the through-hole 3a. Therefore, for example, a configuration may be used in which a circular hole is cut out in the center of a polygonal (e.g., rectangular) resin plate to form a single annular plate 30 (or the plate may be divided into multiple plates), or a configuration in which rectangular plates 30 are arranged in an annular shape.

[0126] In the above embodiments, the cushion 15 is sandwiched between the support film 13 and the mounting plate 16, and the sensor 17 is sandwiched between the cushion 15 and the mounting plate 16. However, this is not necessarily limited to this. For example, the cushion 15 may be omitted, or the sensor 17 may be attached to the rear surface of the mounting plate 16.

[0127] In the above embodiments, the cushion 12 is formed using a foam material having a higher density than the cushion 15. However, this is not necessarily limited to this. For example, the densities of the cushions 12 and 15 may be the same, or the cushion 12 may be formed using a foam material having a lower density than the cushion 15.

[0128] In the above embodiments, the overlapping area La with the head 3 in the region R including the upper edge of the membrane member 11 is larger than the overlapping area Lb with the head 3 in other regions, but this is not necessarily limited to this. For example, the overlapping area La in the region R including the upper edge of the membrane member 11 may be smaller than the overlapping area Lb in other regions, or the overlapping areas La and Lb may be the same size.

[0129] In the first embodiment, the left and right fastening surfaces of the lifter 20 are fastened by one bolt 24 each, but this is not necessarily limited to this. For example, the left and right fastening surfaces may be fastened by a plurality of bolts 24 each.

[0130] In the first embodiment, the bent portion 21c and the fastening portion 22b are fastened by the bolt 24 above the vertical center C1 of the left and right fastening surfaces of the lifter 20, but this is not necessarily limited to this. For example, the bolt 24 may be provided at the vertical center C1 of the fastening surfaces or below it.

[0131] In the first embodiment, the bent portion 21c (fixing member 21) is fastened to the inner side of the fastening portion 22b in the left-right direction, but this is not necessarily limited to this. For example, the fastening portion 22b (mounting member 22) may be fastened to the inner side of the bent portion 21c in the left-right direction. In this case, by forming an elongated hole 22b1 (see FIG. 2) in the bent portion 21c and forming an internally threaded hole 21c1 (see FIG. 2) in the fastening portion 22b, it is possible to fasten the bolt 24 from the side of the bent portion 21c and the fastening portion 22b, and it is also possible to adjust the fixed position of the mounting member 22 relative to the fixing member 21 in the front-rear direction. [Explanation of symbols]

[0132] 1,201,301,401 Percussion Instruments 2 Shell (body) 3 Head (regulating means) 3a Through hole 10 Attachment (Percussion) 11 Membrane members 12 cushion (first cushion) 13 Support membrane (support) 14 Frame (support) 15 Cushion (second cushion, support) 16 Mounting plate (support) 30 Plate (hard body, restricting means) 440 Annular member (hard body, restricting means) 100 Foot Pedal 103 Beater

Claims

1. a first cushion; a membrane member joined to the front surface of the first cushion to form a striking surface; and a restricting means disposed at a position overlapping with the outer edges of the first cushion and the membrane member in the thickness direction of the membrane member, A percussion instrument, characterized in that, when the membrane member is struck, the regulating means regulates deformation of the outer edge of the first cushion, which would otherwise increase in thickness.

2. 2. The percussion instrument according to claim 1, wherein the outer edge portion of the first cushion is compressed by the restricting means before the striking surface is struck.

3. a head that covers an opening of the body and has a through hole formed therein; and a support that is attached to a rear surface side of the head and supports the membrane member and the first cushion in an area where the through hole is formed, 2. The percussion instrument according to claim 1, wherein the circumferential edge of the through hole of the head constitutes the restricting means.

4. 4. The percussion instrument according to claim 3, further comprising an annular hard body sandwiched between the membrane member and the head and formed harder than the head.

5. 5. The percussion instrument according to claim 4, wherein the hard body is a plate attached to the periphery of the through hole of the head.

6. 4. The percussion instrument according to claim 3, characterized in that the support body comprises a support membrane that supports the rear surface of the first cushion, an annular frame that is connected to the outer edge of the support membrane and attached to the rear surface of the head, a mounting plate that is superimposed on the rear side of the frame and on which a sensor is attached, and a second cushion that is sandwiched between the mounting plate and the support membrane.

7. 7. The percussion instrument according to claim 6, wherein the sensor is sandwiched between the mounting plate and the second cushion.

8. 7. The percussion instrument according to claim 6, wherein the first cushion is harder than the second cushion.

9. the percussion instrument is a bass drum whose striking surface is struck by a beater of a foot pedal, 2. The percussion instrument according to claim 1, wherein the overlapping area between the membrane member and the regulating means in a region including the upper edge of the membrane member is larger than the overlapping area between the membrane member and the regulating means in other regions.

10. A method for forming a striking surface of a percussion instrument including a first cushion, a membrane member joined to a front surface of the first cushion, and a restricting means disposed at a position overlapping outer edges of the first cushion and the membrane member in a thickness direction of the membrane member, A method for forming a striking surface, wherein the striking surface is formed by a portion of the membrane member that is located on the inner periphery side of the regulating means.

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