Electronic percussion instruments, supports, and support methods

Abstract

To provide an electronic percussion instrument, support, and support method that facilitates the reduction of product costs. [Solution] The support 8 comprises a contact portion 81 that overlaps the lower end (back end) of the body 2, an outer peripheral portion 82 that extends from the contact portion 81 toward the striking surface along the outer peripheral surface of the body 2, and a protruding portion 83 that extends radially outward from the outer peripheral portion 82 toward the striking surface by the back hoop 5b. Furthermore, since the contact portion 81, the outer peripheral portion 82, and the protruding portion 83 are integrally formed from the same material, the manufacturing cost of the support 8 can be easily reduced. Therefore, by using the support 8 compared to using the head 3 to attach the back hoop 5b to the back of the body 2, the product cost of the electronic percussion instrument 1 can be easily reduced.

Description

Technical Field

[0001] The present invention relates to an electronic percussion instrument, a support, and a support method, and particularly to an electronic percussion instrument, a support, and a support method that can easily reduce product costs.

Background Art

[0002] Conventionally, an electronic percussion instrument that imitates a percussion instrument such as an acoustic drum in which a head forming a striking surface covers one end of a cylindrical body and the outer edge of the head is pressed and fixed by an annular hoop has been known. In order to approximate the appearance of the electronic percussion instrument to that of an acoustic one, a hoop may be attached not only to the striking surface side but also to the other end side of the body, on the back side opposite to the striking surface. Since the inner diameter of the hoop is larger than the outer diameter of the body, in order to support the hoop on the body, for example, in Patent Document 1, a head is interposed between the hoop and the body on the back side as well as on the striking surface side.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the technology of Patent Document 1 described above, a relatively expensive head is provided on the back side that is basically not struck, so there is a problem that the product cost of the electronic percussion instrument tends to increase.

[0005] The present invention has been made to solve the above-described problems, and an object thereof is to provide an electronic percussion instrument, a support, and a support method that can easily reduce product costs.

Means for Solving the Problems

[0006] To achieve this objective, the electronic percussion instrument of the present invention comprises a cylindrical body with openings at both ends, a head that covers the opening at one end of the body and forms a striking surface, a support provided at the other end of the body, an annular back hoop having an inner diameter larger than the outer diameter of the body and supported at the other end of the body via the support, a back tension bolt that pulls the back hoop toward the head, and a back lug to which the back tension bolt is fastened and fixed to the outer circumferential surface of the body, wherein the support comprises a contact portion that overlaps the other end of the body, an outer circumferential portion extending from the contact portion toward the head along the outer circumferential surface of the body, and a protruding portion that extends radially outward from the outer circumferential portion and is pressed toward the head by the back hoop, wherein the contact portion, the outer circumferential portion, and the protruding portion are integrally formed from the same material.

[0007] The present invention provides a support for an electronic percussion instrument comprising: a cylindrical body having openings at both ends; a head covering the opening at one end of the body; an annular back hoop having an inner diameter larger than the outer diameter of the body and located at the other end of the body; a back tension bolt pulling the back hoop toward the head; and a back lug to which the back tension bolt is fastened and fixed to the outer circumferential surface of the body, wherein the back hoop is supported at the other end of the body, and the support comprises: a contact portion that overlaps the other end of the body; an outer circumferential portion extending from the contact portion toward the head along the outer circumferential surface of the body; and a protruding portion that extends radially outward from the outer circumferential portion and is pressed toward the head by the back hoop, wherein the contact portion, the outer circumferential portion, and the protruding portion are integrally formed from the same material.

[0008] The present invention relates to a method for supporting an electronic percussion instrument, comprising: a cylindrical body having openings at both ends; a head covering one end of the body; an annular back hoop having an inner diameter larger than the outer diameter of the body; a back tension bolt pulling the back hoop toward the head; and a back lug to which the back tension bolt is fastened and fixed to the outer circumferential surface of the body, wherein the back hoop is supported at the other end of the body via a support, the support comprising: a contact portion superimposed on the other end of the body; an outer circumferential portion extending from the contact portion toward the head along the outer circumferential surface of the body; and a protruding portion extending radially outward from the outer circumferential portion and pressed toward the head by the back hoop, wherein the contact portion, the outer circumferential portion, and the protruding portion are integrally formed from the same material. [Brief explanation of the drawing]

[0009] [Figure 1] This is an exploded perspective view of the striking surface side of the electronic percussion instrument according to the first embodiment. [Figure 2] This is a cross-sectional view of an electronic percussion instrument. [Figure 3] This is a disassembled perspective view of the back of an electronic percussion instrument. [Figure 4] This is an exploded perspective view of the back side of the electronic percussion instrument according to the second embodiment. [Figure 5] This is a cross-sectional view of an electronic percussion instrument. [Figure 6] This is a cross-sectional view of the electronic percussion instrument according to the third embodiment. [Figure 7] (a) is a perspective view of the support, and (b) is a perspective view of the support according to the fourth embodiment. [Modes for carrying out the invention]

[0010] Hereinafter, preferred embodiments will be described with reference to the attached drawings. First, the overall configuration of the electronic percussion instrument 1 of the first embodiment will be described with reference to Figures 1 and 2. Figure 1 is an exploded perspective view of the striking surface side of the electronic percussion instrument 1 of the first embodiment. Figure 2 is a cross-sectional view of the electronic percussion instrument 1. The cross-sectional plane of the electronic percussion instrument 1 in Figure 2 is a plane that passes through the axis C of the body portion 2 of the electronic percussion instrument 1 and is parallel to the left-right direction in Figure 1.

[0011] As shown in Figures 1 and 2, the electronic percussion instrument 1 is an electronic drum that imitates an acoustic drum. The electronic percussion instrument 1 has a cylindrical body 2 (shell) with openings at both ends. The body 2 is a cylindrical member centered on axis C and is made of wood. However, the body 2 may be made of a material other than wood (for example, metal or resin).

[0012] In the following explanation, the direction of axis C will be simply referred to as the axial direction, the direction perpendicular to axis C will be referred to as the radial direction, and the direction around axis C will be referred to as the circumferential direction. Furthermore, one end of the body 2 in the axial direction (the upper end in Figure 1) will be referred to as the upper end, and the other end of the body 2 in the axial direction will be referred to as the lower end.

[0013] First, let's describe the upper end of the electronic percussion instrument 1. The opening at the upper end of the body 2 is covered by a membrane-like head 3, so that the upper surface of the head 3 becomes the striking surface of the electronic percussion instrument 1. The head 3 is formed in a disc shape using a mesh woven from synthetic fibers, and an annular head frame 31 is fixed to the outer edge of the head 3.

[0014] The head frame 31 is formed using a resin material, and the head 3 and the head frame 31 are integrally molded by mold molding. Alternatively, the head frame 31 may be formed using a material other than resin (for example, metal or wood), and the head frame 31 may be joined to the head 3 by adhesive or other means.

[0015] The head 3 is attached to the body portion 2 by an annular striking-side hoop 5a together with an annular rim 4. In this attached state, the rim 4 is disposed on the inner peripheral side of the striking-side hoop 5a that presses against the outer edge of the head 3, and the rim 4 surrounds the striking surface of the head 3.

[0016] The rim 4 is a member for performing a rim shot in which a player strikes the head 3 and the rim 4 simultaneously, or a rim-only shot in which only the rim 4 is struck. The rim 4 includes an annular struck portion 40 that receives a strike by a player, and a substantially rectangular parallelepiped-shaped sandwiched portion 41 formed on the outer peripheral surface of the struck portion 40. These respective portions 40 and 41 are integrally formed using a resin material (such as rubber or elastomer) that is softer than the striking-side hoop 5a.

[0017] In a state where the rim 4 is attached to the body portion 2, the struck portion 40 protrudes significantly upward from the striking-side hoop 5a and is supported by the upper end of the body portion 2 via the head 3 at the outer edge portion of the striking surface. A plurality of sandwiched portions 41 (16 locations in this embodiment) are formed so as to respectively protrude downward from a plurality of locations (circumferentially at equal intervals or unequal intervals) separated from each other at the outer edge of the struck portion 40.

[0018] A plurality (32 locations in this embodiment) of accommodating portions 51a are provided on the inner peripheral surface of the striking-side hoop 5a at positions corresponding to the sandwiched portions 41 and at intermediate positions therebetween. The accommodating portion 51a is a recess having a shape corresponding to the sandwiched portion 41, and is formed by recessing a part of the inner peripheral surface of the striking-side hoop 5a radially outward. When the rim 4 is attached to the upper surface of the head 3, the sandwiched portion 41 is accommodated in the accommodating portion 51a, and the sandwiched portion 41 is sandwiched between the head 3 and the striking-side hoop 5a on the outer peripheral side of the body portion 2. Note that since a known configuration can be adopted for the attachment structure of this rim 4, a detailed description thereof is omitted, but an example of a known configuration is the rim attachment structure disclosed in Japanese Patent Application Laid-Open No. 2019-148623.

[0019] The dough-kneading side hoop 5a is formed of a metallic material and has an inner diameter larger than the outer diameter of the body portion 2. Note that the dough-kneading side hoop 5a may be formed using a material other than metal (for example, resin or wood). Through holes 52a for inserting the dough-kneading side tension bolts B1 are formed at equal intervals in the circumferential direction in the dough-kneading side hoop 5a. A plurality of (six locations in this embodiment) dough-kneading side lugs 6a for fastening (screwing in) the dough-kneading side tension bolts B1 are provided at equal intervals in the circumferential direction on the outer peripheral surface of the body portion 2.

[0020] A female screw hole 61a that extends in the axial direction and opens upward is formed in the dough-kneading side lug 6a. While fitting the sandwiched portion 41 of the rim 4 into the accommodating portion 51a of the dough-kneading side hoop 5a and hooking the head frame 31 of the head 3 on the dough-kneading side hoop 5a, tension is applied to the head 3 by fastening the dough-kneading side tension bolt B1 to the female screw hole 61a of the dough-kneading side lug 6a.

[0021] Further, the dough-kneading side lug 6a is fixed to the body portion 2 by a fixing bolt B2 that is inserted from the inner peripheral side into a through hole 21a that penetrates the body portion 2 in the radial direction. A female screw hole 62a is formed in the dough-kneading side lug 6a at a position corresponding to the through hole 21a, and the fixing bolt B2 is fastened to the female screw hole 62a. The head sensor support portion 10 is fixed to the inner peripheral surface of the body portion 2 by a part of the plurality of fixing bolts B2.

[0022] The head sensor support portion 10 is a frame for supporting a plurality of head sensors 16. The head sensor support portion 10 includes an annular central attachment portion 11 that surrounds the axis C, a pair of bridge portions 12 that extend from the central attachment portion 11 to both sides in the radial direction, respectively, and a pair of fixed end portions 13 that extend upward from the radially outer ends of the pair of bridge portions 12 and overlap the inner peripheral surface of the body portion 2.

[0023] The central mounting section 11 and the bridge section 12 are formed by combining a lower plate section and multiple reinforcing plate sections that rise substantially vertically from the lower plate section, thereby ensuring rigidity. A mounting slit 13a is formed in the fixed end section 13, extending axially downward from the upper end of the fixed end section 13. The fixing bolt B2, inserted into this mounting slit 13a and the through hole 21a of the body section 2, is fastened to the female threaded hole 62a of the striking surface side lug 6a, thereby fastening the head sensor support section 10 and the striking surface side lug 6a together to the body section 2.

[0024] Mounting protrusions 13b project radially outward from the upper ends of the fixed ends 13 on both sides of the mounting slit 13a. These mounting protrusions 13b are inserted into a temporary placement slit 22 that extends axially downward from the upper end of the body 2. By placing the mounting protrusions 13b on the lower end of the temporary placement slit 22 before fixing with the fixing bolts B2, the head sensor support 10 can be temporarily placed in the fixing position to the body 2. This makes the fixing work with the fixing bolts B2 easier.

[0025] Multiple (eight in this embodiment) mounting protrusions 14 protrude upward in the axial direction from the central mounting portion 11. A plate 15 is attached to the upper end of each pair of mounting protrusions 14 with fixing bolts B3. The plate 15 is a roughly rectangular plate whose radial dimensions are larger than its circumferential dimensions, and its radially outer portion is supported by the mounting protrusions 14. On the other hand, the radially inner portion of the plate 15 is not supported by the central mounting portion 11 and is floating.

[0026] A disc-shaped sensor 16b (piezoelectric element) is attached to the upper surface of the radially inner portion of the plate 15 using cushioning double-sided tape 16a, and a cushion 16c is attached to the upper surface of the sensor 16b. The head sensor 16 is formed by these double-sided tapes 16a, sensor 16b, and cushion 16c.

[0027] The cushion 16c is a frustoconical cushioning material formed from a flexible material such as sponge, rubber, or thermoplastic elastomer, and the upper end of the cushion 16c is in contact with the lower surface of the head 3. As a result, vibrations from the impact on the head 3 are transmitted to the sensor 16b via the cushion 16c, and these vibrations are detected by the head sensor 16. Then, a musical tone signal based on the detection result of the head sensor 16 is generated by a sound source (not shown), and this musical tone signal is output to an amplifier and a speaker (neither shown), causing an electronic musical tone to be emitted from the speaker (the same applies to the rim sensor 9 described later).

[0028] Next, with reference to Figures 2 and 3, the lower end (the back side opposite the striking surface) of the electronic percussion instrument 1 will be described. Figure 3 is an exploded perspective view of the back side of the electronic percussion instrument 1. Although the back side of the electronic percussion instrument 1 does not have a head 3 like the striking surface side, it is equipped with a back hoop 5b, a back tension bolt B4, and a back lug 6b, similar to the striking surface side.

[0029] The back hoop 5b, back tension bolt B4, and back lug 6b are identical in construction to the front hoop 5a, front tension bolt B1, and front lug 6a, respectively, but inverted vertically, and are arranged vertically symmetrically, so their descriptions are partially omitted. In order to distinguish the parts on the front and back sides, the last letter of the corresponding part's designation has been changed from "a" on the front side to "b" on the back side.

[0030] Specifically, the housing portion 51b and through hole 52b in the back hoop 5b correspond to the housing portion 51a and through hole 52a in the striking surface hoop 5a, respectively, and the female threaded holes 61b and 62b in the back lug 6b correspond to the female threaded holes 61a and 62a in the striking surface lug 6a, respectively. The back lug 6b is fixed to the body 2 by fastening a fixing bolt B5, which is inserted from the inner circumference side into a through hole 21b that penetrates the body 2 radially, into the female threaded hole 62b.

[0031] By providing these back hoops 5b, back tension bolts B4, and back lugs 6b on the electronic percussion instrument 1, the appearance of the electronic percussion instrument 1 can be made to approximate that of an acoustic percussion instrument. Furthermore, since the playing surface hoop 5a and the back hoop 5b, the playing surface tension bolts B1 and B4, and the playing surface lugs 6a and back lugs 6b are all common parts, the cost of these parts can be reduced and assembly can be improved.

[0032] The inner diameter of the back hoop 5b, which is provided to make the appearance closer to that of an acoustic instrument, is larger than the outer diameter of the body 2, so the back hoop 5b moves axially along the back tension bolt B4. In order to restrict this movement (to support the back hoop 5b on the body 2), conventional technology sometimes provides a head 3 on the back side as well as on the playing side.

[0033] However, this head 3 is designed with consideration for its vibration performance when struck and its durability against such impacts, so it tends to be expensive. If such a head 3 is also provided on the back side, which is not typically struck, the product cost of the electronic percussion instrument 1 will increase. Therefore, in this embodiment, a relatively inexpensive support 8 is provided on the back side of the body 2 instead of the head 3.

[0034] The support 8 is provided with an annular contact portion 81 that overlaps the entire circumference of the lower end of the body portion 2. From the entire circumference of the outer edge of this contact portion 81, an annular outer peripheral portion 82 extends toward the striking surface side (head 3 side) along the outer peripheral surface of the body portion 2. From the entire circumference of the upper end of the outer peripheral portion 82, an annular projection portion 83 protrudes radially outward.

[0035] With the contact portion 81 overlapping the lower end of the body portion 2, the back hoop 5b is placed against the protruding portion 83 from below, and the back hoop 5b is pulled toward the striking surface by the back tension bolt B4 fastened to the back lug 6b, thereby pressing the protruding portion 83 toward the striking surface by the back hoop 5b. As a result, the support 8 is sandwiched between the lower end of the body portion 2 and the back hoop 5b, and the back hoop 5b is supported by the lower end of the body portion 2 via the support 8.

[0036] If the head 3 is constructed considering vibration performance during striking, and the support 8 has at least a contact portion 81, an outer peripheral portion 82, and a protruding portion 83, the design freedom for supporting the back hoop 5b can be increased, and the cost of support can be easily reduced. Furthermore, since the contact portion 81, the outer peripheral portion 82, and the protruding portion 83 are integrally formed from the same material, the manufacturing cost of the support 8 can be easily reduced compared to when separate materials are used to form each portion 81-83. Therefore, the product cost of the electronic percussion instrument 1, which has the back hoop 5b attached to the back of the body 2, can be easily reduced.

[0037] In particular, in this embodiment, since the support 8 is an integrally molded product made from a single resin material, each part 81 to 83 is integrally formed from the same material. In this case, the support 8 can be easily manufactured using a mold, so assembly of the support 8 can be eliminated, or post-demolition processing can be eliminated or minimized. As a result, the manufacturing cost of the support 8 can be more easily reduced, and the product cost of the electronic percussion instrument 1 can be more easily reduced.

[0038] Multiple protrusions 84 extend radially outward from the outer surface of the outer periphery portion 82. The same number of protrusions 84 are provided at positions corresponding to the multiple housing portions 51b of the back hoop 5b. When the back hoop 5b is brought into contact with the protruding portion 83, these protrusions 84 are housed in the housing portions 51b.

[0039] As a result, even if a housing portion 51b is provided on the back hoop 5b for commonality with the striking surface side, the protrusion 84 is housed in the housing portion 51b, thereby increasing the contact area between the support 8 and the back hoop 5b. If the protrusion 84 is not provided, the back hoop 5b will not contact the support 8 at the position of the housing portion 51b, and the stress caused by this contact may concentrate at a position other than the housing portion 51b. In contrast, the protrusion 84 allows the back hoop 5b to contact the support 8 even at the position of the housing portion 51b, and by increasing the contact area, the above-mentioned stress concentration can be alleviated. As a result, the durability of the back hoop 5b and the support 8 can be improved.

[0040] The more housing sections 51a, 51b and protrusions 84 are provided, the less metal material is used to form each hoop 5a, 5b, and the more resin material is used to form the protrusions 84. Therefore, since resin material is generally cheaper and lighter than metal material, the overall product cost of the electronic percussion instrument 1 can be reduced or the electronic percussion instrument 1 can be made lighter. In particular, in this embodiment, the number of housing sections 51a, 51b and protrusions 84 is greater than the number of clamped parts 41 housed in the housing section 51a on the striking surface side, so the product cost of the electronic percussion instrument 1 can be reduced even further or the electronic percussion instrument 1 can be made even lighter.

[0041] The support body 8 further includes a disc-shaped inner portion 85 connected to the contact portion 81 and provided on the inner circumference side of the body portion 2, and this inner portion 85 is also integrally molded with the contact portion 81, etc. The rim sensor 9 is attached to the inner portion 85. In this way, the support body 8 can be given the function of supporting the rim sensor 9 in addition to the function of attaching the back hoop 5b to the back side of the body portion 2.

[0042] The rim sensor 9 is a disc-shaped piezoelectric element, which is attached to the inner part 85 via cushioning double-sided tape 9a. Vibrations from the impact on the rim 4 are transmitted to the rim sensor 9 via the body 2 and support 8, and these vibrations are detected by the rim sensor 9.

[0043] Here, instead of attaching the rim sensor 9 to the support 8, it is also possible to attach the rim sensor 9 to the head sensor support 10, as in the electronic percussion instrument 100 of the second embodiment described later (see Figure 5). However, since the head sensor support 10 is supported by the body 2 in a double-supported manner (at two points at equal intervals in the circumferential direction), the length of the vibration transmission path to the rim sensor 9 tends to fluctuate depending on the striking position on the rim 4. This may cause the sensitivity of the rim sensor 9 to become unstable depending on the striking position, potentially reducing the detection accuracy of the rim sensor 9 in detecting strikes on the rim 4. When attaching the rim sensor 9 to the head sensor support 10, in order to ensure this detection accuracy, it is preferable to support the head sensor support 10 on the body 2 at four or more points at equal intervals in the circumferential direction.

[0044] In contrast, in this embodiment, the rim sensor 9 is attached to a support 8, which is a separate component from the head sensor support 10. Therefore, the head sensor support 10 can be supported from both sides without affecting the detection accuracy of the rim sensor 9, thus simplifying its configuration.

[0045] Next, the detailed configuration of the inner portion 85, including the mounting position of the rim sensor 9, will be described. The inner portion 85 comprises an inner circumferential extension portion 86 extending from the contact portion 81 toward the striking surface along the inner circumferential surface of the body portion 2, a plurality of (six in this embodiment) connecting portions 87 extending radially inward from the upper end of the inner circumferential extension portion 86, and a central portion 88 connected to the plurality of connecting portions 87 and located on the axis C. The inner circumferential extension portion 86 is a cylindrical portion connected to the entire circumference of the inner edge of the contact portion 81.

[0046] The connecting portion 87, which is connected to the contact portion 81 via the inner circumferential extension portion 86, is a plate-shaped portion that is substantially perpendicular to the axis C. Furthermore, the multiple connecting portions 87 intermittently connect the central portion 88 and the contact portion 81 over the entire circumference of the body portion 2 (at positions that are separated from each other in the circumferential direction). As a result, multiple openings 85a that connect the inside and outside of the body portion 2 are formed between multiple circumferentially adjacent connecting portions 87. This makes it easier for vibrations when striking the head 3 to be released to the outside through the openings 85a, thereby reducing the sound volume generated when striking the head 3.

[0047] Furthermore, if such an opening 85a between the connecting parts 87 is formed in the inner part 85, the appearance of the back of the electronic percussion instrument 1 (the appearance of the inner part 85) may deviate from that of an acoustic percussion instrument. However, because the inner circumferential extension 86 causes the connecting parts 87 and the central part 88 to be recessed toward the striking surface side relative to the contact part 81, and the area around the opening 85a is raised, the area around the opening 85a can be made less visible from the side when the back of the electronic percussion instrument 1 is facing downwards. Therefore, even if an opening 85a is provided in the inner part 85, the appearance of the back of the electronic percussion instrument 1 can be made to approximate that of an acoustic percussion instrument.

[0048] The central portion 88 is a disc-shaped part approximately perpendicular to the axis C, and a rim sensor 9 is mounted on the upper surface of the central portion 88 along the axis C. When vibrations occur when the rim 4 is struck, they are transmitted from the body portion 2 to the support 8, and then transmitted to the rim sensor 9 on the axis C through multiple connecting portions 87 in the circumferential direction and the central portion 88. As a result, even if the striking position on the rim 4 changes in the circumferential direction, the length of the vibration transmission path from the striking position to the rim sensor 9 can be made uniform. Therefore, changes in the sensitivity of the rim sensor 9 according to the striking position can be suppressed, and the detection accuracy of the impact on the rim 4 by the rim sensor 9 can be improved. In particular, since four or more (six in this embodiment) connecting portions 87, which are vibration transmission paths, are arranged at equal intervals in the circumferential direction, changes in the sensitivity of the rim sensor 9 according to the striking position can be further suppressed, and the detection accuracy of the impact on the rim 4 by the rim sensor 9 can be further improved.

[0049] The support body 8 is provided with a projection 89 to further improve the detection accuracy. The projection 89 is a portion that protrudes from the inner portion 85 along the inner circumferential surface of the body 2 toward the striking surface, and is formed in the shape of a rectangular plate substantially perpendicular to the radial direction. The projection 89 is fixed to the body 2 by a fixing bolt B5 (fastening member) inserted into a slit 89a formed through the projection 89, so that the projections 89 on both sides of the slit 89a are pressed toward the body 2. This improves the mounting rigidity of the support body 8 (inner portion 85) to the body 2 at the projection 89. Therefore, vibrations during impact on the rim 4 are more easily transmitted from the body 2 through the projection 89 and inner portion 85 to the rim sensor 9, further improving the detection accuracy of impact on the rim 4 by the rim sensor 9.

[0050] The fixing bolt B5 used to secure the protrusion 89 is also used to secure the back lug 6b to the body 2, as described above. That is, the fixing bolt B5 that penetrates the body 2 secures both the back lug 6b and the protrusion 89 to the body 2 (fastened together). This reduces the number of fixing bolts B5 compared to using separate fixing bolts B5 for securing the back lug 6b and the protrusion 89.

[0051] The slit 89a into which the shaft of the fixing bolt B5 is inserted opens at the tip of the protruding portion 89 on the striking surface side and extends axially. This allows, for example, the fixing bolt B5 to be loosened beforehand, and then the support 8 to be assembled to the body 2 so that the shaft of the fixing bolt B5 is slid into the slit 89a, after which the fixing bolt B5 can be tightened. Thus, the process of fixing the support 8 to the body 2 using the fixing bolt B5 can be simplified. Furthermore, because the slit 89a extends axially, axial alignment between the through hole 21b in the body 2 into which each fixing bolt B5 is inserted and the slit 89a can be made unnecessary or easy.

[0052] Furthermore, multiple protrusions 89 (six in this embodiment) are provided, spaced apart in the circumferential direction, so that each protrusion 89 is located radially inward of the multiple back lugs 6b. Since each protrusion 89 is fixed to the body 2 with a fixing bolt B5, the mounting rigidity of the support 8 to the body 2 can be further improved. Therefore, the accuracy of detecting impacts to the rim 4 by the rim sensor 9 can be further improved.

[0053] These multiple protrusions 89 and the central portion 88 are connected linearly (radially) by multiple connecting portions 87. This allows for the homogenization and shortening of the length of the vibration transmission path from each of the protrusions 89, which have improved mounting rigidity, to the rim sensor 9 on the central portion 88. Therefore, the accuracy of the rim sensor 9 in detecting impacts to the rim 4 can be further improved.

[0054] From the circumferential edge of the connecting portion 87, a rib 87b (a plate-like wall) extends radially along its entire length, rising approximately perpendicularly toward the striking surface. That is, the rib 87b rises approximately perpendicularly from the periphery of the opening 85a toward the striking surface. This rib 87b improves the rigidity of the connecting portion 87, which is the vibration transmission path to the rim sensor 9. This makes it more difficult to transmit low-frequency vibrations from the head 3 to the rim sensor 9 when it strikes, while making it easier to transmit high-frequency vibrations from the rim 4 when it strikes to the rim sensor 9. As a result, the detection accuracy of the rim sensor 9's impact on the rim 4 can be further improved.

[0055] The radially outer ends of the multiple connecting portions 87 are connected circumferentially by plate-shaped circumferential connecting portions 87a that are substantially perpendicular to the axis C. This further improves the rigidity of the connecting portions 87. Furthermore, since the multiple circumferential connecting portions 87a are connected to the inner circumferential extension portion 86 between the multiple protruding portions 89, the rigidity of the connecting portions 87 can be further improved. Ribs 87b also protrude from the inner edge of the circumferential connecting portion 87a (the periphery of the opening 85a), and the ribs 87b are continuous around the entire circumference of the opening 85a. This further improves the rigidity of the connecting portions 87. As a result, the accuracy of the rim sensor 9 in detecting impacts to the rim 4 can be further improved.

[0056] Next, the electronic percussion instrument 100 of the second embodiment will be described with reference to Figures 4 and 5, but the same reference numerals will be used for parts identical to those in the first embodiment described above, and their descriptions will be omitted. Figure 4 is an exploded perspective view of the back side of the electronic percussion instrument 100 of the second embodiment. Figure 5 is a cross-sectional view of the electronic percussion instrument 100. The cross-section of the electronic percussion instrument 100 in Figure 5 is the same cross-section as in Figure 2 of the first embodiment.

[0057] As shown in Figures 4 and 5, the electronic percussion instrument 100 of the second embodiment is provided with a support 110 instead of the support 8 (see Figure 2) of the first embodiment. Since this support 110 does not have a function (space) for attaching the rim sensor 9, the electronic percussion instrument 100 attaches the rim sensor 9 to the head sensor support 10. In the second embodiment, compared to the first embodiment, the opening at the upper end of the central mounting portion 11 of the head sensor support 10 is closed, and the rim sensor 9 is attached to the upper surface of the closed portion via double-sided tape 9a.

[0058] The support members 110 are provided on the lower end side of the body 2 and are arranged in multiples (six in this embodiment) at equal (or unequal) intervals in the circumferential direction. Each of the multiple support members 110 has a plate-shaped contact portion 111 that overlaps a part of the circumferential direction of the lower end of the body 2. From the outer edge of this contact portion 111, a plate-shaped outer peripheral portion 112 extends toward the striking surface side (head 3 side) along the outer peripheral surface of the body 2. From the upper end of the outer peripheral portion 112, a plate-shaped protruding portion 113 protrudes radially outward. These contact portion 111, outer peripheral portion 112, and protruding portion 113 are configured substantially the same as the circumferential parts of the annular contact portion 81, outer peripheral portion 82, and protruding portion 83 (see Figure 3) of the first embodiment.

[0059] Multiple support members 110, which are distributed circumferentially around the body 2, are sandwiched between the lower end of the body 2 and the back hoop 5b, similar to the support member 8 in the first embodiment, thereby supporting the back hoop 5b at the lower end of the body 2 via the support members 110. Note that the number of support members 110 is not limited to six; three or more support members can stably support the back hoop 5b at the body 2 via the support members 110.

[0060] A hook portion 114 extends from the inner edge of the contact portion 111 toward the striking surface along the inner circumferential surface of the body portion 2. As a result, when assembling the back hoop 5b and the support 110 to the body portion 2, if the contact portion 111 is placed on the lower end of the body portion 2 facing upward, the hook portion 114 will catch on the inner circumferential surface of the body portion 2. Therefore, the protruding portion 113 of the support 110 can be pressed down by the back hoop 5b while making it difficult for the support 110 to fall off the body portion 2, thus making the assembly work of these to the body portion 2 easier.

[0061] The support 110 is formed by bending a single rectangular metal plate, with each part 111 to 114 being integrally formed. This makes it easier to further reduce the manufacturing cost of the support 110 compared to the disc-shaped support 8 of the first embodiment, and thus makes it easier to further reduce the product cost of the electronic percussion instrument 100 including the support 110.

[0062] Next, the electronic percussion instrument 200 of the third embodiment will be described with reference to Figures 6 and 7(a), but the same reference numerals are used for parts that are the same as those in the first embodiment described above, and their descriptions will be omitted. Figure 6 is a cross-sectional view of the electronic percussion instrument 200 of the third embodiment. The cross-section of the electronic percussion instrument 200 in Figure 6 is the same cross-section as in Figure 2 of the first embodiment. Figure 7(a) is a perspective view of the support 210.

[0063] As shown in Figures 6 and 7(a), the electronic percussion instrument 200 of the third embodiment is provided with a support 210 in place of the support 8 (see Figure 2) of the first embodiment, and with a head sensor support 220 in place of the head sensor support 10 (see Figure 2) of the first embodiment. The support 210 comprises a contact portion 81, an outer peripheral portion 82, a protruding portion 83, a convex portion 84, an inner portion 211 connected to the inner edge of the contact portion 81 and provided on the inner circumference side of the body portion 2, and a protruding portion 89 protruding from the inner portion 211. Since the support 210 is an integrally molded product made of a single resin material, each of these portions 81-84, 89, and 211 is integrally formed from the same material.

[0064] The inner portion 211 comprises a central portion 88 and a connecting portion 212 that continuously connects the central portion 88 and the contact portion 81 around the entire circumference of the body portion 2, and is formed in the shape of a single disc substantially perpendicular to the axis C. When the support 210 is attached to the body portion 2 via the back hoop 5b by the contact portion 81, the outer peripheral portion 82 and the protruding portion 83, the opening on the back of the body portion 2 is covered by the disc-shaped inner portion 211, which does not have an opening 85a (see Figure 3) as in the first embodiment. This makes it possible to approximate the appearance of the back of the electronic percussion instrument 200 to that of an acoustic percussion instrument with a head 3 attached to the back as well.

[0065] The protruding portion 89 is a part that protrudes from the outer edge of the inner portion 211 (the boundary portion with the contact portion 81) along the inner circumferential surface of the body portion 2 toward the striking surface. The fixing bolt B6 (fastening member) inserted into the slit 89a of the protruding portion 89 is fastened to the threaded hole 23 provided on the inner circumferential surface of the body portion 2, thereby fixing the protruding portion 89 to the body portion 2. In this way, the mounting rigidity of the support 210 (inner portion 211) to the body portion 2 can be improved not only when the protruding portion 89 is fastened together with the back lug 6b as in the first embodiment, but also when it is fixed independently as in this embodiment.

[0066] In the electronic percussion instrument 200, multiple (four in this embodiment) rim sensors 9 are attached to the upper surface of the connecting portion 212 at equal intervals in the circumferential direction via double-sided tape 9a. This makes it possible to suppress changes in the sensitivity of the rim sensors 9 according to the circumferential striking position on the rim 4, even without providing a single rim sensor 9 on the axis C as in the electronic percussion instrument 1 of the first embodiment.

[0067] The head sensor support portion 220 is a separate component from the support body 210 to which the rim sensor 9 is attached. This simplifies the configuration so that the head sensor support portion 220 is cantilevered to the body portion 2, omitting one of the bridge portion 12 and fixed end portion 13 compared to the head sensor support portion 10 of the first embodiment, without affecting the detection accuracy of the rim sensor 9.

[0068] Next, with reference to Figure 7(b), the support 310 of the electronic percussion instrument of the fourth embodiment will be described, but the same reference numerals will be used for parts that are the same as those in the first and second embodiments described above, and their descriptions will be omitted. Figure 7(b) is a perspective view of the support 310 of the fourth embodiment. The support 310 is assembled to the body 2, for example, in place of the support 8 (see Figure 2) of the electronic percussion instrument 1 of the first embodiment. Hereinafter, each part of the support 310 will be described in this assembled state.

[0069] As shown in Figure 7(b), the support 310 of the fourth embodiment includes a contact portion 111, an outer peripheral portion 112, a protruding portion 113, an inner portion 311 connected to the inner edge of the contact portion 111, and a protruding portion 89 protruding from the inner portion 311. In the support 310, the contact portion 111, the outer peripheral portion 112, the protruding portion 113, and the protruding portion 89 are provided in multiple quantities (six of each in this embodiment) at equal intervals in the circumferential direction. Since the support 310 is an integrally molded product made of a single resin material, each of these portions 89, 111-113, and 311 is integrally formed from the same material.

[0070] The inner portion 311 comprises a plurality of inner circumferential extensions 312 extending from each of the contact portions 111 toward the striking surface side (upper in Figure 7(b)) along the inner circumferential surface of the body portion 2, a central portion 88, and a plurality of connecting portions 87 connecting the contact portion 111 and the central portion 88 via the inner circumferential extensions 312. The inner circumferential extensions 312 are plate-shaped portions configured to be substantially the same as a portion in the circumferential direction of the inner circumferential extension 86 (see Figure 3) of the first embodiment. A projection 89 protrudes toward the striking surface side from the boundary portion between the inner circumferential extensions 312 and the connecting portions 87.

[0071] Thus, the support 310 differs from the support 8 of the first embodiment in that each part around the central part 88 is divided in the circumferential direction and the rib 87b (see Figure 3) is omitted, and its basic function is the same as that of the support 8. However, in the support 310, this division and the omission of the rib 87b reduce the rigidity of the connecting part 87, making it more susceptible to vibration. As a result, even if the vibration when the rim 4 is struck is weak, the vibration transmitted from the body part 2 to the protruding part 89 etc. can be easily transmitted to the rim sensor 9 on the central part 88 via the connecting part 87. As a result, the detection sensitivity of the impact on the rim 4 by the rim sensor 9 can be improved.

[0072] Furthermore, by dividing the outer circumference of the support 310, the circumferential connecting portion 87a (see Figure 3) of the first embodiment is omitted. This allows the openings 85a between adjacent connecting portions 87 to be widened radially outward. As a result, vibrations during impact with the head 3 are more easily released to the outside of the body 2 through the openings 85a, thus further reducing the sound volume generated during impact with the head 3.

[0073] Although the above-described embodiments have been explained, the present invention is not limited in any way to the above embodiments, and it can be easily inferred that various improvements and modifications are possible without departing from the spirit of the present invention.

[0074] In the first embodiment described above, the case in which the rim 4 includes a striking portion 40 and a clamping portion 41 was explained, but it is not necessarily limited to this. For example, the clamping portion 41 may be omitted, and the striking portion 40 may be fixed to the upper end portion of the striking surface side hoop 5a. Along with the omission of the clamping portion 41, the housing portion 51a may be omitted from the striking surface side hoop 5a. Similarly, the housing portion 51b may be omitted from the back side hoop 5b. In addition, regardless of the presence or absence of the housing portion 51b, the protrusion 84 may be omitted from the support 8,210.

[0075] In the first embodiment described above, the back hoop 5b, back tension bolt B4, and back lug 6b are configured identically to the striking surface hoop 5a, striking surface tension bolt B1, and striking surface lug 6a, respectively, but inverted vertically, and are arranged symmetrically vertically. However, the invention is not limited to this, and for example, the shape and arrangement of the striking surface parts 5a, B1, 6a and the back surface parts 5b, B4, 6b may be different. Alternatively, the striking surface lug 6a and the back lug 6b may be composed of a single lug with internal threaded holes 62a, 62b on both the upper and lower sides.

[0076] In the first, third, and fourth embodiments described above, the support members 8, 210, and 310 are integrally molded products made from a single resin material, and in the second embodiment described above, the support member 110 is integrally formed by bending a metal plate, but the invention is not necessarily limited to these. It is sufficient that at least the contact portions 81, 111, the outer peripheral portions 82, 112, and the protruding portions 83, 113 of the support members 8, 110, 210, and 310 are integrally formed from the same material, and for example, these and the inner portions 85, 211, and 311 may be formed from different materials. Furthermore, integral formation from the same material is not limited to the case where a single part is integrally formed, but also includes the integration of multiple parts of the same material by bonding, welding, screwing, etc. Bonding multiple parts of the same material has fewer constraints compared to bonding different materials, and makes it easier to reduce the manufacturing cost of the support members 8, 110, 210, and 310. The materials that make up the supports 8, 110, 210, and 310 may be other than resin or metal materials, such as wood.

[0077] In the third embodiment described above, the case in which the inner portion 211 is disc-shaped was explained, but it is not necessarily limited to this. For example, the inner portion 211 may be left with a tongue-shaped portion that protrudes radially inward from the contact portion 81 and supports each of the multiple rim sensors 9, while other portions may be omitted (as openings).

[0078] In the first and fourth embodiments described above, the case in which the connecting portion 87 is connected to the contact portions 81 and 111 via the inner circumferential extension portions 86 and 312 was explained, but the invention is not necessarily limited to this. The inner circumferential extension portions 86 and 312 may be omitted, and the connecting portion 87 may be configured to be directly connected to the contact portions 81 and 111.

[0079] In the first and second embodiments described above, the head sensor support portion 10 is supported by the body portion 2 at both ends, and in the third embodiment described above, the head sensor support portion 220 is supported by the body portion 2 at one end. However, the invention is not limited to these configurations. For example, the head sensor support portions 10 and 220 may be supported by the body portion 2 at three or more points in the circumferential direction.

[0080] In the first to third embodiments described above, the use of fixing bolts B2, B3, B5, and B6 to secure the various parts of the electronic percussion instruments 1,100, and 200 was explained, but the invention is not limited to this. For example, fastening members consisting of a lug 6a on the striking surface side, a lug 6b on the back side, a screw shaft protruding from the body 2, and a nut fitted onto the screw shaft may be used instead of the fixing bolts B2, B3, B5, and B6. Alternatively, fastening members such as rivets may be used instead of the fixing bolts B2, B3, B5, and B6.

[0081] In the first, third, and fourth embodiments described above, a case in which a slit 89a is formed in the protruding portion 89 was explained, but this is not necessarily the only case. For example, instead of a slit 89a, a circular through-hole into which fixing bolts B5 and B6 are inserted may be provided in the protruding portion 89. Similarly, the mounting slit 13a may be used as a through-hole.

[0082] Some or all of the above embodiments may be combined with or replaced with some or all of other embodiments. For example, in the first, third, and fourth embodiments as in the second embodiment, the rim sensor 9 may be attached to the head sensor support portion 10, 220, and in the first, second, and fourth embodiments as in the third embodiment, multiple rim sensors 9 may be provided. Also, as in the second embodiment, the inner portions 85, 211 may be omitted from the support portions 8, 210 of the first and third embodiments, and the radially inner portion beyond the contact portion 81 may be made into a large opening that connects the inside and outside of the body portion 2. The connecting portion 212 of the third embodiment may be replaced with the connecting portion 87 of the first and fourth embodiments. [Explanation of Symbols]

[0083] 1,100,200 Electronic percussion instruments 10,220 Head sensor support part 16 Head Sensor 2 Torso 3 heads 4 rims 40 Hit part 41 Clamped part 5a Hoop on the striking surface side 5b Backside hoop 51a, 51b Storage section 6b Backside Rug 8,110,210,310 Support 81,111 Contact part 82,112 Outer perimeter 83,113 Overhang 84 Convex part 85,211,311 Inner part 85a opening 86,312 Inner circumference extension 87,212 Connecting part 87b Rib 88 Central part 89 Protrusion 89a Slit 9 Rim Sensor B1 Tension bolt on the striking surface side B4 Rear Tension Bolt B5, B6 Fixing bolts (fastening members) C axis

Claims

1. The instrument comprises a cylindrical body with openings at both ends, a head that covers the opening at one end of the body and forms a striking surface, a support provided at the other end of the body, an annular back hoop having an inner diameter larger than the outer diameter of the body and supported at the other end of the body via the support, a back tension bolt that pulls the back hoop toward the head, and a back lug to which the back tension bolt is fastened and fixed to the outer surface of the body, The support comprises a contact portion that overlaps the other end of the body, an outer peripheral portion that extends from the contact portion toward the head along the outer peripheral surface of the body, and a protruding portion that extends radially outward from the outer peripheral portion of the body and is pressed toward the head by the back hoop. An electronic percussion instrument characterized in that the contact portion, the outer peripheral portion, and the protruding portion are integrally formed from the same material.

2. The head comprises an annular rim surrounding the striking surface and a rim sensor for detecting vibrations when the rim is struck, The support member comprises an inner portion connected to the contact portion and provided on the inner circumference side of the body portion, The electronic percussion instrument according to claim 1, characterized in that the rim sensor is attached to the inner part.

3. The support has a protruding portion that extends from the inner portion toward the head side along the inner circumferential surface of the body, The electronic percussion instrument according to claim 2, characterized in that the protruding portion is fixed to the body portion by a fastening member.

4. The electronic percussion instrument according to claim 3, characterized in that the back lug and the protruding portion are both fixed to the body by the fastening member that penetrates the body.

5. The aforementioned protruding portion has a slit that opens at the tip on the head side and extends in the axial direction of the body. The electronic percussion instrument according to claim 3, characterized in that the fastening member is inserted into the slit and presses the protruding portions on both sides of the slit toward the body side to secure it.

6. The electronic percussion instrument according to any one of claims 2 to 5, characterized in that the inner portion comprises a central portion on the axis of the body to which the rim sensor is attached, and a connecting portion that intermittently or continuously connects the central portion and the contact portion over the entire circumference of the body.

7. The aforementioned protrusions are provided in multiple locations, spaced apart from each other in the circumferential direction of the body. The inner portion comprises a central portion on the axis of the body to which the rim sensor is attached, and a plurality of connecting portions that linearly connect the central portion and the plurality of protruding portions. The electronic percussion instrument according to any one of claims 3 to 5, characterized in that a plurality of openings are formed between a plurality of adjacent connecting portions in the circumferential direction, allowing communication between the inside and outside of the body portion.

8. The electronic percussion instrument according to claim 7, characterized in that the inner portion is provided with ribs that rise from the periphery of the opening toward the head.

9. The inner portion includes an inner circumferential extension portion that extends from the contact portion toward the head side along the inner circumferential surface of the body, The electronic percussion instrument according to claim 7, characterized in that the connecting portion is connected to the contact portion via the inner circumferential portion, and the connecting portion and the central portion are in a position recessed toward the head side relative to the contact portion.

10. The system includes a head sensor that contacts the head to detect vibrations during impact to the head, and a head sensor support portion to which the head sensor is attached. The electronic percussion instrument according to any one of claims 2 to 5, characterized in that the head sensor support portion is a separate component from the support body and is cantilevered or double-supported to the body.

11. The head comprises an annular striking surface hoop that presses against the outer edge of the head, and an annular rim disposed on the inner circumference side of the striking surface hoop. The rim comprises an annular striking portion that protrudes more significantly in the axial direction of the body than the striking surface hoop and is supported at one end of the body via the head, and a plurality of clamping portions that protrude from multiple circumferentially separated locations on the outer edge of the striking portion toward the other end of the body and are sandwiched between the head and the striking surface hoop on the outer circumference of the body, The striking surface hoop is provided with a plurality of accommodating portions that are recessed radially outward on the inner circumferential surface of the striking surface hoop and each accommodates a plurality of the clamped portions. The aforementioned back hoop is constructed in the same manner as the aforementioned playing surface hoop. The electronic percussion instrument according to any one of claims 1 to 5, characterized in that the support has a protrusion that extends radially outward from the outer peripheral surface of the outer peripheral portion and is housed in the housing portion.

12. The electronic percussion instrument according to any one of claims 1 to 5, characterized in that the support has an opening that connects the inside and outside of the body.

13. An electronic percussion instrument comprising: a cylindrical body with openings at both ends; a head covering the opening at one end of the body; an annular back hoop having an inner diameter larger than the outer diameter of the body and located at the other end of the body; a back tension bolt pulling the back hoop toward the head; and a back lug to which the back tension bolt is fastened and fixed to the outer surface of the body, wherein the back hoop is supported at the other end of the body, The body comprises a contact portion that overlaps the other end of the body, an outer peripheral portion that extends from the contact portion toward the head along the outer peripheral surface of the body, and a protruding portion that extends radially outward from the outer peripheral portion of the body and is pressed toward the head by the back hoop, The support is characterized in that the contact portion, the outer peripheral portion, and the protruding portion are integrally formed from the same material.

14. A method for supporting the back hoop at the other end of an electronic percussion instrument via a support, comprising: a cylindrical body having openings at both ends; a head covering the opening at one end of the body; an annular back hoop having an inner diameter larger than the outer diameter of the body; a back tension bolt pulling the back hoop toward the head; and a back lug to which the back tension bolt is fastened and fixed to the outer surface of the body; The support comprises a contact portion that overlaps the other end of the body, an outer peripheral portion that extends from the contact portion toward the head along the outer peripheral surface of the body, and a protruding portion that extends radially outward from the outer peripheral portion of the body and is pressed toward the head by the back hoop. A support method characterized in that the contact portion, the outer peripheral portion, and the protruding portion are integrally formed from the same material.

Images