Percussion instrument and method for fastening rod

Abstract

The invention provides a percussion instrument capable of improving versatility and a fastening method of a rod. The bracket (10) is provided with: an insertion hole (11a) into which the horizontal rod (100a) can be inserted; and insertion holes (11b, 14a) into which the horizontal rod (100b) can be inserted. The horizontal rod (100a) inserted into the insertion hole (11a) can be fastened by the first fastening part (31) of the first fastening member (30), and the horizontal rod (100b) inserted into the insertion holes (11b, 14a) can be fastened by the second fastening part (42) of the second fastening member (40). Therefore, the percussion instrument (1) can be supported by the two horizontal rods (100a, 100b) which extend in the same direction (horizontal direction) and have different diameters, and thus versatility can be improved.

Description

Technical Field

[0001] The invention relates to a percussion instrument and a rod fastening method, and in particular to a percussion instrument and a rod fastening method capable of improving versatility. Background Art

[0002] The following technology is known: a percussion instrument is supported on a rod by fixing the rod to a bracket provided on the outer surface of a frame. For example, Patent Document 1 describes a drum bracket 100 capable of fixing a large-diameter support rod 2 and a small-diameter support rod 3 (rod) extending in a horizontal direction or a vertical direction. According to the technology, a percussion instrument can be supported on support rods 2 and 3 having different diameters or insertion directions.

[0003] [Prior art literature]

[0004] [Patent Document]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2010-286622 (e.g., paragraph 0020, FIG. 1) Summary of the invention

[0006] [Problems to be solved by the invention]

[0007] However, in the above-mentioned prior art, only a rod of one diameter can be fixed to the bracket in both the horizontal direction and the vertical direction, and therefore there is a problem of low versatility.

[0008] The present invention is made to solve the above-mentioned problems, and an object of the present invention is to provide a percussion instrument and a rod fastening method that can improve versatility.

[0009] [Technical means to solve the problem]

[0010] In order to achieve the above-mentioned purpose, the percussion instrument of the present invention can be supported by a first rod and a second rod having a smaller diameter than the first rod, and the percussion instrument includes: a frame; a bracket arranged on the outer surface of the frame; a fastening bolt fastened toward the cavity inside the bracket; and a fastening portion elastically deformed or slidably displaced inside the bracket by the fastening force of the fastening bolt, the bracket includes: a first insertion hole for inserting the first rod; and a second insertion hole for inserting the second rod in the same direction as the insertion direction of the first rod relative to the first insertion hole, and the fastening portion is composed of at least a first fastening portion for fastening the first rod inserted into the first insertion hole, and a second fastening portion for fastening the second rod inserted into the second insertion hole.

[0011] The rod fastening method of the present invention is a rod fastening method for a percussion instrument, wherein the percussion instrument can be supported by a first rod and a second rod having a smaller diameter than the first rod, the percussion instrument comprising: a frame; a bracket arranged on the outer surface of the frame; a fastening bolt fastened toward a cavity inside the bracket; and a fastening portion elastically deformed or slidably displaced inside the bracket by the fastening force of the fastening bolt, the bracket comprising: a first insertion hole capable of allowing the first rod to be inserted; and a second insertion hole capable of allowing the second rod to be inserted in the same direction as the insertion direction of the first rod relative to the first insertion hole, and in the rod fastening method, the fastening portion is constituted by at least the first fastening portion and the second fastening portion, the first fastening portion is used to fasten the first rod inserted into the first insertion hole, and on the other hand, the second fastening portion is used to fasten the second rod inserted into the second insertion hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG. 1( a ) is a perspective view of a percussion instrument according to a first embodiment, and FIG. 1( b ) is a partially enlarged perspective view of the percussion instrument.

[0013] Figure 2 It is an exploded stereoscopic diagram of a percussion instrument.

[0014] FIG. 3( a ) is a partially enlarged cross-sectional view of the percussion instrument, and FIG. 3( b ) is a partially enlarged cross-sectional view of the percussion instrument showing a state where the horizontal rod is fastened by the first fastening portion.

[0015] 4( a ) is a partially enlarged cross-sectional view of the percussion instrument showing a state where a horizontal rod is fastened by a second fastening portion, and FIG. 4( b ) is a partially enlarged cross-sectional view of the percussion instrument showing a state where a vertical rod is fastened by a second fastening portion.

[0016] FIG5(a) is a partially enlarged cross-sectional view of the percussion instrument at the Va portion of FIG3(b), and FIG5(b) is a partially enlarged cross-sectional view of the percussion instrument at the Vb portion of FIG4(a).

[0017] FIG6(a) is a perspective view of a fastening member according to a second embodiment, and FIG6(b) is a partially enlarged cross-sectional view of a percussion instrument according to the second embodiment.

[0018] 7( a ) is a partially enlarged cross-sectional view of the percussion instrument showing a state where the horizontal rod is fastened by a first fastening portion, and FIG. 7( b ) is a partially enlarged cross-sectional view of the percussion instrument showing a state where the horizontal rod is fastened by a second fastening portion.

[0019] FIG8(a) is a rear perspective view of a bracket according to a third embodiment, and FIG8(b) is a cross-sectional view of the bracket.

[0020] FIG9(a) is a cross-sectional view of the bracket showing a state where the horizontal rod is fastened by the first fastening portion, and FIG9(b) is a cross-sectional view of the bracket showing a state where the horizontal rod is fastened by the second fastening portion.

[0021] FIG. 10( a ) is a cross-sectional view of a bracket according to a fourth embodiment, and FIG. 10( b ) is a cross-sectional view of the bracket showing a state where a horizontal bar is fastened by a first fastening portion and a second fastening portion.

[0022] FIG. 11( a ) is a cross-sectional view of a bracket according to a fifth embodiment, and FIG. 11( b ) is a cross-sectional view of the bracket showing a state where a horizontal bar is fastened by a first fastening portion and a second fastening portion.

[0023] FIG. 12( a ) is a cross-sectional view of a bracket according to the sixth embodiment, and FIG. 12( b ) is a cross-sectional view of the bracket showing a state where a horizontal bar is fastened by a first fastening portion and a second fastening portion.

[0024] [Explanation of Symbols]

[0025] 1.201: Percussion instruments

[0026] 2: Bottom frame (part of the frame)

[0027] 3: Top frame (part of the frame)

[0028] 8: Enhanced frame (part of the frame)

[0029] 10, 310, 410, 610: Bracket

[0030] 11a, 311a: first insertion hole

[0031] 11b, 14a, 311b: Second insertion hole

[0032] 12a, 312a, 314a: third insertion hole

[0033] 20: Fastening bolts

[0034] 21: Axis

[0035] 30, 330: First fastening member

[0036] 31, 331, 431, 531, 631: Fastening part (first fastening part)

[0037] 31b, 331b, 431b: Slit

[0038] 33: Protrusion

[0039] 40, 340: Second fastening member

[0040] 42, 242, 342, 442, 542, 642: Fastening portion (second fastening portion)

[0041] 100a: Horizontal bar (first bar)

[0042] 100b: Horizontal bar (second bar)

[0043] 100c: Plumb bar (third bar) DETAILED DESCRIPTION

[0044] Hereinafter, a preferred embodiment will be described with reference to the accompanying drawings. First, referring to FIG. 1(a), FIG. 1(b) and Figure 2 The overall structure of the percussion instrument 1 of the first embodiment will be described. FIG1(a) is a perspective view of the percussion instrument 1 of the first embodiment, and FIG1(b) is a partially enlarged perspective view of the percussion instrument 1. Figure 2 It is an exploded perspective view of the percussion instrument 1.

[0045] As shown in Fig. 1(a) and Fig. 1(b), the percussion instrument 1 is an electronic percussion instrument simulating an acoustic drum. The percussion instrument 1 includes a substantially disc-shaped bottom frame 2 constituting its bottom surface, and a top frame 3 overlapping the bottom frame 2 and constituting the outer peripheral surface of the percussion instrument 1 (frame) together with the bottom frame 2. Although not shown in the figure, the top frame 3 is formed in a cylindrical shape, and the opening portion of the upper end side of the top frame 3 is covered by a membrane-like drumhead 4.

[0046] The drumhead 4 is formed into a disc shape using a net obtained by weaving synthetic fibers, and is mounted on the percussion instrument 1 through an annular drum hoop 5. The drum hoop 5 is provided with through holes (not shown) at multiple locations in the circumferential direction thereof, and tension bolts 6 are inserted into the through holes. A plurality of drum lugs 7 are provided on the outer circumferential surface of the bottom frame 2, and the tension bolts 6 are tightened (screwed) into the drum lugs 7 while the outer edge of the drumhead 4 is hooked on the drum hoop 5, thereby applying tension to the drumhead 4.

[0047] A drumhead sensor (not shown) in contact with the lower surface of the drumhead 4 is installed on the inner circumference of the top frame 3 (including the inside of the frame of the bottom frame 2 and the top frame 3). When the drumhead sensor detects the vibration when the drumhead 4 (striking surface) is struck, a musical sound signal based on the detection result is generated by a sound source (not shown). The musical sound signal is output to an amplifier or a loudspeaker (neither shown) to play electronic musical sound from the loudspeaker.

[0048] A reinforcing frame 8 formed into an annular shape using a metal plate is sandwiched between the lower frame 2 and the upper frame 3 , and a protruding portion 8 a protruding toward the outer peripheral side of the lower frame 2 or the upper frame 3 is integrally formed on the reinforcing frame 8 .

[0049] The bracket 10 is fixed (screwed) to the lower surface of the protrusion 8a by two fixing bolts 9 arranged in the circumferential direction. A circular insertion hole 11a for inserting the horizontal rod 100a and a polygonal (in this embodiment, a regular hexagonal) insertion hole 11b for inserting the horizontal rod 100b having a smaller diameter than the horizontal rod 100a are formed in the outer peripheral wall 11 constituting the outer peripheral surface of the bracket 10 in a vertical arrangement.

[0050] The cross-sectional shape of the horizontal rod 100a is circular, and the cross-sectional shape of the horizontal rod 100b is polygonal (regular hexagonal). The diameter of the horizontal rod 100b (the diameter of the circle circumscribed with the polygonal horizontal rod 100b) is formed to be smaller than the diameter of the horizontal rod 100a. Similarly, the diameter of the insertion hole 11b (the diameter of the circle circumscribed with each vertex of the polygonal insertion hole 11b) is formed to be smaller than the diameter of the insertion hole 11a.

[0051] An insertion hole 8 b penetrating vertically is formed in the protruding portion 8 a of the reinforcing frame 8 . The insertion hole 8 b is a hole for inserting a vertical rod 100 c (see FIG. 4( b )) extending in the vertical direction.

[0052] The horizontal rods 100a, 100b and the vertical rod 100c are rods for forming a part of a drum set (drum stand) and supporting the percussion instrument 1. Any one of the horizontal rods 100a, 100b or the vertical rod 100c is (selectively) fixed to the bracket 10 according to the type of the drum set supporting the percussion instrument 1.

[0053] The rods 100a to 100c are fixed to the bracket 10 by the fastening bolts 20. The fastening bolts 20 are fastened to the bracket 10 in a horizontal direction (hereinafter referred to as "fastening direction of the fastening bolts 20") orthogonal to the insertion direction of the horizontal rod 100b into the insertion hole 11b and the insertion direction of the vertical rod 100c into the insertion hole 8b.

[0054] As shown in Figure 1(a), Figure 1(b) and Figure 2 As shown, the bracket 10 includes a bottom wall 12 (see FIG. 1 ) extending from the lower end of the outer peripheral wall 11 toward the bottom frame 2 (the inner peripheral side of the percussion instrument 1). Figure 2 ), a pair of side walls 13 rise upward from both ends of the bottom wall 12 in the tightening direction of the tightening bolts 20. The pair of side walls 13 are connected by an inner peripheral wall 14 in the tightening direction of the tightening bolts 20, and each wall 11 to 14 of the bracket 10 is formed integrally using metal.

[0055] The bracket 10 is formed with a cavity S surrounded by the walls 11 to 14, and the first fastening member 30 and the second fastening member 40 are accommodated from the opening portion on the upper side of the cavity S. The bracket 10 in a state where the fastening members 30 and 40 are accommodated is screwed to the protrusion 8a of the reinforcement frame 8 by the fixing bolts 9 (see FIGS. 1(a) and 1(b)), thereby attaching the bracket 10 or the fastening members 30 and 40 to the percussion instrument 1.

[0056] The first fastening member 30 is a resin component for fastening the horizontal rod 100 a (see FIG. 1( a )), and the second fastening member 40 is a metal component for fastening the horizontal rod 100 b (see FIG. 1( b )).

[0057] The first fastening member 30 includes a cylindrical first fastening portion 31 having an inner peripheral surface 31a with a circular cross section, and an annular portion 32 is integrally formed on the axial end surface of the first fastening portion 31. The annular portion 32 is an annular protrusion having the same inner diameter as the inner peripheral surface 31a of the first fastening portion 31, and the outer diameter of the annular portion 32 is formed to be the same as (or slightly smaller than) the inner diameter of the insertion hole 11a. By inserting the annular portion 32 into the insertion hole 11a of the bracket 10, the inner peripheral surface 31a of the first fastening portion 31 communicates with the insertion hole 11a.

[0058] Therefore, when the horizontal rod 100a is inserted from the insertion hole 11a, the horizontal rod 100a is held by the inner peripheral surface 31a of the first fastening portion 31. Although not shown in the figure, the insertion of the horizontal rod 100a toward the inner peripheral surface 31a of the first fastening portion 31 is stopped by contact with the limiting wall 2b of the bottom frame 2 (see FIG. 4(b)).

[0059] First, refer to Figure 2 3(a) and 3(b) illustrate the structure of fastening the horizontal rod 100a by the first fastening portion 31. FIG. 3(a) is a partially enlarged cross-sectional view of the percussion instrument 1, and FIG. 3(b) is a partially enlarged cross-sectional view of the percussion instrument 1 showing the state of fastening the horizontal rod 100a by the first fastening portion 31. In addition, FIG. 3(a) and FIG. 3(b) show a cross-sectional view after being cut along a plane orthogonal to the insertion direction of the horizontal rod 100a, that is, a pair of protrusions 33 (refer to FIG. 31 ) of the first fastening member 30. Figure 2 ) is a cross-section of the protrusion 33 located on the insertion hole 11a side.

[0060] like Figure 2As shown in Figs. 3(a) and 3(b), a slit 31b is formed at the lower end of the first fastening portion 31 to divide a portion of the first fastening portion 31 in the circumferential direction (direction around the inner peripheral surface 31a). The slit 31b is a crack extending over both ends of the inner peripheral surface 31a of the first fastening portion 31 in the axial direction, and a slit 32a (see Fig. 32b ) is connected to one end of the slit 31b in the longitudinal direction (the end on the insertion hole 11a side). Figure 2 ). The slit 32a is formed to cut out the root of the annular portion 32 over approximately half of the circumference (the connection portion with the first fastening portion 31). By forming these slits 31b and 32a, the first fastening portion 31 formed in an approximately C-shape can be elastically deformed (deformed to narrow the width of the slit 31b).

[0061] The side surface 31c of the first fastening portion 31 facing the fastening bolt 20 side (the left side of Figures 3(a) and 3(b)) is formed into an arc shape corresponding to the inner peripheral surface 31a of the first fastening portion 31 (centered on the central axis of the inner peripheral surface 31a), and a protrusion 33 is integrally formed at the lower end portion of the side surface 31c of the first fastening portion 31 (near the slit 31b).

[0062] A recess 34 is formed at the connection portion between the root of the protrusion 33 and the side surface 31c of the first fastening portion 31 (see FIGS. 3(a) and 3(b)). The recess 34 is formed in a groove shape extending over both ends of the protrusion 33 in the insertion direction of the horizontal rod 100a (the direction perpendicular to the paper surface of FIGS. 3(a) and 3(b)). The bottom surface of the recess 34 (the surface facing the fastening bolt 20 side) is a curved shape convex to the side opposite to the fastening bolt 20 side (the right side of FIGS. 3(a) and 3(b)), and the convex portion 41 of the second fastening member 40 is embedded in the recess 34. The convex portion 41 is a curved shape along the recess 34 (convex to the side of the recess 34).

[0063] Each fastening member 30, 40 is housed in the cavity S of the bracket 10 in a state where the convex portion 41 is fitted into the concave portion 34. In the housed state, displacement of the first fastening member 30 in various directions is restricted by the bottom frame 2 or the bracket 10.

[0064] Specifically, the displacement of the first fastening member 30 in the insertion direction of the horizontal rod 100a (in the vertical direction of the paper surface of FIG. 3 (a) and FIG. 3 (b)) is controlled by the outer peripheral wall 11 of the bracket 10 (refer to FIG. Figure 2 ) is limited by the limiting wall 2b of the bottom frame 2 (refer to Figure 4(b)).

[0065] In addition, a leg portion 34 connected to the side surface 31d of the first fastening portion 31 facing the side opposite to the fastening bolt 20 side (the right side in FIG. 3(a) and FIG. 3(b)) is integrally formed, and the leg portion 34 protrudes downward from the slit 31b and is supported by the bottom wall 12 of the bracket 10. In addition, the bottom frame 2 includes a protrusion 2a sandwiched between the reinforcement frame 8 (protrusion 8a) and the bracket 10, and the first fastening member 30 is covered from above by the protrusion 2a. Therefore, the up-and-down displacement of the first fastening member 30 is restricted by the protrusion 2a of the bottom frame 2 and the bottom wall 12 of the bracket 10.

[0066] The side wall 13 on the opposite side of the leg portion 34 of the pair of side walls 13 of the bracket 10 is formed with a female screw hole 13a (see Figure 2 ), the shaft portion 21 of the fastening bolt 20 is fastened to the female screw hole 13a. The second fastening member 40 is arranged at the front end side of the shaft portion 21 of the fastening bolt 20, so the fastening force when the fastening bolt 20 is fastened acts on the second fastening member 40.

[0067] Due to the tightening force of the tightening bolt 20, the second tightening member 40 slides and displaces along the tightening direction of the tightening bolt 20, and with the sliding displacement, the protrusion 33 (recess 34) of the first tightening member 30 is pressed by the convex portion 41 of the second tightening member 40 (refer to FIG. 3 (b)). By pressing the protrusion 33 of the first tightening member 30, the first tightening portion 31 elastically deforms in a manner that the diameter of its inner peripheral surface 31a is reduced (the width of the slit 31b is narrowed), thereby tightening the horizontal rod 100a. In this way, the horizontal rod 100a is fixed to the bracket 10.

[0068] Then, refer to Figure 2 4(a) and 4(b) illustrate the structure of fastening the horizontal rod 100b and the vertical rod 100c. FIG4(a) is a partially enlarged cross-sectional view of the percussion instrument 1 showing the state in which the horizontal rod 100b is fastened by the second fastening portion 42 of the second fastening member 40, and FIG4(b) is a partially enlarged cross-sectional view of the percussion instrument 1 showing the state in which the vertical rod 100c is fastened by the second fastening portion 42 of the second fastening member 40. In addition, FIG4(b) corresponds to the cross-sectional view after cutting along the IVb-IVb line of FIG4(a). First, referring to FIG4(a), Figure 2 4( a ) will now be described the structure for fastening the horizontal rod 100 b .

[0069] like Figure 2 4 (a), the inner peripheral wall 14 of the bracket 10 is formed with an insertion hole 14a, the insertion hole 14a in the insertion direction of the horizontal rod 100b and the insertion hole 11b (reference Figure 2) are facing each other. In addition, the protrusion 33 and the leg 34 of the first fastening member 30 are formed on both sides of the insertion hole 14a (away from the insertion hole 14a) when viewed in the insertion direction of the horizontal rod 100b (see FIG. 4(a)). Figure 2 ) The horizontal rod 100b inserted therein passes between the protrusion 33 and the leg 34 of the first fastening member 30 and is inserted into the insertion hole 14a.

[0070] The protrusion 33 is formed into a pair of protrusions arranged along the insertion direction of the horizontal rod 100a (vertical direction of the paper surface of FIG. 4(a)). Figure 2 ), the second fastening portion 42 of the second fastening member 40 is inserted between the pair of protruding portions 33. The second fastening portion 42 is a protrusion formed integrally with the convex portion 41 of the second fastening member 40, and the second fastening portion 42 is formed in the substantially central portion of the convex portion 41 in the insertion direction of the horizontal rod 100a (refer to Figure 2 ).

[0071] A groove 42a for fastening the horizontal rod 100b is formed at the front end (right end in FIG. 4(a)) of the second fastening portion 42. The groove 42a is formed in a V-shape recessed in a direction away from the central axis of the insertion hole 14a when viewed in the insertion direction of the horizontal rod 100b.

[0072] The groove 42a is formed at a position extending further toward the center of the insertion hole 14a than the protrusion 33 when viewed in the insertion direction of the horizontal rod 100b (see FIG. 4(a)). Therefore, by tightening the fastening bolt 20 while the horizontal rod 100b is inserted into the insertion hole 14a, the horizontal rod 100b is pressed against the inner peripheral surface of the insertion hole 14a by the groove 42a of the second fastening portion 42. At this time, although not shown in the figure, the horizontal rod 100b is also pressed against the insertion hole 11b (see FIG. Figure 2 That is, the horizontal rod 100b is fixed to the bracket 10 in a manner of being clamped by the groove 42a of the second fastening portion 42 and the insertion holes 11b and 14a.

[0073] Then, refer to Figure 2 4 (a) to illustrate the structure of the fastening of the vertical rod 100c. Figure 2 ) is formed with an insertion hole 12a for inserting the plumb rod 100c, and a pair of through holes 31e and 31f are formed in the first fastening portion 31 of the first fastening member 30 at positions overlapping with the insertion hole 12a in the vertical direction. The through hole 31e is a hole connecting the lower surface of the first fastening portion 31 and the inner peripheral surface 31a, and the through hole 31f is a hole connecting the upper surface of the first fastening portion 31 and the inner peripheral surface 31a.

[0074] Although not shown in the figure, the protruding portion 2a of the bottom frame 2 that covers the first fastening portion 31 from above is also formed with a through hole 2c (see FIG. 6(b)). Therefore, the vertical rod 100c (see FIG. 4(b)) inserted from below the insertion hole 12a passes through the through holes 31e, 31f (see FIG. 4(b)) of the first fastening member 30. Figure 2 ) and inserted into the insertion hole 8b of the reinforcement frame 8. The inserted state of the vertical rod 100c is also fixed by the second fastening member 40.

[0075] A groove 42b for fastening the vertical rod 100c is formed at the front end of the second fastening portion 42 of the second fastening member 40. The groove 42b is formed in a V-shape that is recessed in a direction away from the central axis of the insertion hole 12a when viewed in the insertion direction of the vertical rod 100c (see FIG. 4(b)). In addition, the depth of the groove 42b from the front end of the second fastening portion 42 is formed deeper than the groove 42a (see FIG. 4(b)). Figure 2 ), a pair of grooves 42a are formed on both sides of the groove 42b (separated by a gap in the insertion direction of the horizontal rod 100b).

[0076] The groove 42b of the second fastening portion 42 is formed at a position extending further toward the center of the insertion hole 12a than the through hole 31e of the first fastening portion 31 when viewed in the insertion direction of the plumb rod 100c (refer to FIG. 4(b)). Therefore, by tightening the fastening bolt 20 while the plumb rod 100c is inserted into each of the insertion holes 8b, 12a (through hole 31e, through hole 31f), the plumb rod 100c is pressed against the inner circumferential surface of the insertion hole 12a by the groove 42b of the second fastening portion 42. At this time, although not shown in the figure, the plumb rod 100c is also pressed against the insertion hole 8b (refer to FIG. 4(b)). Figure 2 That is, the vertical rod 100c is fixed to the bracket 10 in a manner of being clamped by the groove 42b of the second fastening portion 42 and the insertion hole 8b and the insertion hole 12a.

[0077] As described above, in this embodiment, the horizontal rod 100a inserted into the insertion hole 11a (first fastening portion 31) can be fastened by the first fastening portion 31 of the first fastening member 30 (see FIG. 3(b)), and the horizontal rod 100b inserted into the insertion hole 11b and the insertion hole 14a can be fastened by the second fastening portion 42 (groove 42a) of the second fastening member 40 (see FIG. 4(a)). Thus, the percussion instrument 1 can be supported by two horizontal rods 100a and 100b extending in the same direction (horizontal direction) and having different diameters, thereby improving versatility.

[0078] Furthermore, the vertical rod 100c extending in a direction different from the horizontal rods 100a and 100b can also be fastened by the groove 42b of the second fastening portion 42. Therefore, the versatility of the percussion instrument 1 can be further improved.

[0079] In addition, since the horizontal rod 100a is fastened by utilizing the elastic deformation of the first fastening portion 31, the fastening members 30 and 40 can be returned to their initial positions (the state before the fastening of the fastening bolt 20) by utilizing the elastic restoring force of the first fastening portion 31 by loosening the fastening bolt 20. Therefore, it is possible to prevent the fastening portions 31 and 42 from interfering (hooking) with the insertion of the rods 100a to 100c, thereby improving the workability when supporting the percussion instrument 1 on the rods 100a to 100c.

[0080] Here, as in the second embodiment described later (see FIG. 6(a) and FIG. 6(b)), a structure in which the second fastening portion 242 is integrally formed with the fastening member 230 may also be adopted. However, in such a structure, when the second fastening portion 242 is pressed by the fastening bolt 20, the first fastening portion 31 is deformed so that the second fastening portion 242 rotates around the upper end portion of the first fastening portion 31. Therefore, the second fastening portion 242 can be displaced along the fastening direction of the fastening bolt 20.

[0081] In contrast, in the present embodiment, the first fastening member 30 having the first fastening portion 31 and the second fastening member 40 having the second fastening portion 42 are different parts, and are configured to elastically deform the first fastening portion 31 by utilizing the sliding displacement of the second fastening member 40 caused by the fastening force of the fastening bolt 20 .

[0082] According to this structure, unlike the case where the second fastening portion 242 is integrally formed on the fastening member 230 as in the second embodiment, the elastic deformation of the second fastening portion 42 following the first fastening portion 31 can be suppressed. As a result, the second fastening portion 42 (second fastening member 40) is easily displaced along the fastening direction of the fastening bolt 20, so the fastening force of the fastening bolt 20 is easily transmitted to the horizontal rod 100b or the vertical rod 100c. Therefore, the rods 100b and 100c can be firmly fixed to the bracket 10.

[0083] In addition, in the tightening direction of the tightening bolt 20, the grooves 42a and 42b of the second tightening portion 42 are formed at positions overlapping with the shaft portion 21 of the tightening bolt 20, so that the tightening force of the tightening bolt 20 is easily transmitted to the horizontal rod 100b or the vertical rod 100c. Therefore, each rod 100b, 100c can be firmly fixed to the bracket 10.

[0084] In addition, the protrusion 33 protrudes from the outer peripheral surface of the first fastening portion 31 (near the slit 31b), and the protrusion 33 formed on the displacement trajectory of the second fastening member 40 is pressed by the second fastening member 40, so that the first fastening portion 31 is easily elastically deformed. This is because when the first fastening portion 31 is elastically deformed starting from the portion on the upper end side thereof, the first fastening portion 31 can be pressed at a position away from the starting point of the elastic deformation.

[0085] In addition, a pair of protrusions 33 are formed in a row along the insertion direction of the horizontal rod 100b (horizontal rod 100a), and the second fastening portion 42 is a structure that fastens the horizontal rod 100b by the second fastening portion 42 protruding from between the pair of protrusions 33. As a result, the fastening position of the horizontal rod 100a based on the first fastening portion 31 can be close to the fastening position based on the second fastening portion 42. Therefore, the size of each insertion hole 11a, 11b (see Figure 2 ) are spaced apart from each other, thereby enabling the bracket 10 to be miniaturized.

[0086] Here, in the present embodiment, the leg portion 34 extending downward from the first fastening portion 31 is formed, and the second fastening portion 42 (groove 42a, groove 42b) faces the leg portion 34 in the fastening direction of the fastening bolt 20. Therefore, for example, the rods 100b and 100c can be fastened by the second fastening portion 42 and the leg portion 34. However, with such a structure, each rod 100b and 100c is fastened at one position (approximately one point) in the longitudinal direction thereof, and therefore each rod 100b and 100c cannot be firmly fixed to the bracket 10.

[0087] In contrast, in the present embodiment, the horizontal rod 100b is fixed to the bracket 10 by being clamped at multiple locations of the groove 42a of the second fastening portion 42 and the edges of the two insertion holes 11b and 14a. In addition, the vertical rod 100c is similarly fixed to the bracket 10 by being clamped at multiple locations of the groove 42b of the second fastening portion 42 and the edges of the two insertion holes 8b and 12a. By fastening multiple locations in the longitudinal direction of each rod 100b, 100c as described above, each rod 100b, 100c can be firmly fixed to the bracket 10.

[0088] Next, the structure of the second fastening member 40 will be further described with reference to Fig. 5(a) and Fig. 5(b). Fig. 5(a) is a partially enlarged cross-sectional view of the percussion instrument 1 at the Va portion of Fig. 3(b), and Fig. 5(b) is a partially enlarged cross-sectional view of the percussion instrument 1 at the Vb portion of Fig. 4(a).

[0089] As shown in Fig. 5(a), when the protrusion 33 is pressed by the convex portion 41 in a state where the horizontal rod 100a is inserted into the first fastening portion 31, the first fastening portion 31 undergoes a certain degree of elastic deformation, and the elastic deformation is limited by the contact with the horizontal rod 100a. That is, when the horizontal rod 100a is fastened by the first fastening portion 31, the inner peripheral surface 31a of the first fastening portion 31 maintains a substantially circular state.

[0090] On the other hand, as shown in Fig. 5(b), when the horizontal rod 100b is fastened by the second fastening portion 42, the horizontal rod 100a does not exist on the inner peripheral side of the first fastening portion 31. Therefore, when the protrusion 33 is pressed by the convex portion 41, the first fastening portion 31 is easily deformed in a manner of being pushed up by the convex portion 41.

[0091] Therefore, for example, as shown by the double-dashed line in FIG. 5( b ), when the contact area between the second fastening member 40 and the side surface 31 c of the first fastening portion 31 is expanded vertically, when the convex portion 41 pushes up the first fastening portion 31 while sliding, the side surface 31 c of the first fastening portion 31 is likely to interfere with the upper edge of the second fastening member 40. When the second fastening member 40 is tilted (rotated counterclockwise in FIG. 5( b )) due to the interference, the horizontal rod 100 b cannot be properly fastened by the second fastening portion 42 (groove 42 a). The following is a description of a structure for solving the above problem.

[0092] The second fastening member 40 is formed with a convex surface 43 constituting the front end surface of the convex portion 41, a concave surface 44 connected to the upper edge of the convex surface 43, and a clearance surface 45 connected to the upper edge of the concave surface 44. The convex surface 43 is formed in an arc shape convex toward the concave portion 34 of the first fastening portion 31, and the curvature of the convex surface 43 is the same as that of the concave portion 34. In addition, the concave surface 44 is formed in an arc shape convex toward the direction away from the side surface 31c of the first fastening portion 31, and the curvature of the concave surface 44 is the same as that of the side surface 31c of the first fastening portion 31.

[0093] Furthermore, the clearance surface 45 connected to the upper edge of the concave surface 44 is formed in an arc shape convex upward, and by forming such a clearance surface 45 at the upper end portion of the second fastening member 40, the contact area between the second fastening member 40 and the side surface 31c of the first fastening portion 31 can be reduced. More specifically, when an imaginary circle V is drawn with the central axis O of the inner peripheral surface 31a of the first fastening portion 31 as the center, the second fastening member 40 contacts the side surface 31c of the first fastening portion 31 at a position below the center C of the line segment connecting the lower end of the imaginary circle V (the center of the slit 31b in the circumferential direction of the inner peripheral surface 31a) and the central axis O.

[0094] Thus, when the second fastening member 40 slides while pushing up the first fastening portion 31, the side surface 31c of the first fastening portion 31 can be prevented from interfering with the upper edge of the second fastening member 40. Thus, the second fastening portion 42 (groove 42a) can be prevented from tilting, so the horizontal rod 100b can be properly fastened. Therefore, the horizontal rod 100b can be firmly fixed to the bracket 10.

[0095] In addition, in the present embodiment, the clearance surface 45 is formed in connection with the upper edge of the concave surface 44, but the present invention is not necessarily limited to this. For example, the concave surface 44 may be omitted and the clearance surface 45 may be formed in connection with the upper edge of the convex surface 43. Thus, even when the second fastening member 40 slides while pushing up the first fastening portion 31, the side surface 31c of the first fastening portion 31 can be prevented from interfering with the upper edge of the second fastening member 40.

[0096] Next, a percussion instrument 201 according to a second embodiment will be described with reference to Fig. 6(a), Fig. 6(b) and Fig. 7(a), Fig. 7(b). Note that the same reference numerals are used for the same parts as those in the first embodiment, and description thereof will be omitted.

[0097] FIG. 6( a ) is a perspective view of the fastening member 230 of the second embodiment, and FIG. 6( b ) is a partially enlarged cross-sectional view of the percussion instrument 201 of the second embodiment. FIG. 7( a ) is a partially enlarged cross-sectional view of the percussion instrument 201 showing a state where the horizontal rod 100 a is fastened by the first fastening portion 31, and FIG. 7( b ) is a partially enlarged cross-sectional view of the percussion instrument 201 showing a state where the horizontal rod 100 b is fastened by the groove 42 a of the second fastening portion 242. In addition, FIG. 6( b ) and FIG. 7( a ) and FIG. 7( b ) show cross-sections cut along a plane including the shaft portion 21 of the fastening bolt 20, i.e., a plane orthogonal to the insertion direction of the horizontal rods 100 a and 100 b.

[0098] 6 (a), FIG. 6 (b), the second embodiment of the percussion instrument 201 of the fastening member 230 except for the protrusion 33 is omitted (reference Figure 2 ) and that the first fastening portion 31 and the second fastening portion 242 are integrally formed, the structure is the same as the first fastening member 30 of the first embodiment.

[0099] The second fastening portion 242 extends downwardly in a manner connected to the side surface 31c of the first fastening portion 31, and a recess 242c for fitting the shaft portion 21 is formed on the side surface of the second fastening portion 242 facing the fastening bolt 20. Therefore, the second fastening portion 242 is pressed by the fastening force of the fastening bolt 20, and the first fastening portion 31 is elastically deformed so that the diameter of the inner peripheral surface 31a is reduced.

[0100] Therefore, as shown in FIG. 7( a ), by tightening the tightening bolt 20 while the horizontal rod 100 a is inserted into the first tightening portion 31 , the horizontal rod 100 a is tightened by the first tightening portion 31 that is elastically deformed together with the second tightening portion 242 .

[0101] 7(b), when viewed in the insertion direction of the horizontal rod 100b, the second fastening portion 242 faces the leg portion 34 across the insertion hole 14a, and a groove 42a is formed on the side of the second fastening portion 242 facing the leg portion 34. Therefore, by fastening the fastening bolt 20 while the horizontal rod 100b is inserted into the insertion hole 14a, the horizontal rod 100b is fastened by the groove 42a of the second fastening portion 242.

[0102] In addition, the through hole 31e for inserting the plumb rod 100c (see FIG. 4(b)) extends up and down in a manner connected to the second fastening portion 242. Therefore, although not shown in the figure, the plumb rod 100c that passes through the insertion hole 12a and the through holes 31e, 31f, and 2c and is inserted into the insertion hole 8b is clamped and fixed to the bracket 10 at multiple locations between the second fastening portion 242 (the inner peripheral surface of the through hole 31e) and the edges of the two insertion holes 8b and 12a.

[0103] As described above, in this embodiment, the first fastening portion 31 and the second fastening portion 242 of the fastening member 230 can also be used to fasten the horizontal rod 100a, the horizontal rod 100b and the vertical rod 100c. Thus, the percussion instrument 201 can be supported by two horizontal rods 100a and 100b extending in the same direction (horizontal direction) and having different diameters, and the percussion instrument 201 can also be supported by the vertical rod 100c extending in a direction different from the horizontal rods 100a and 100b. Therefore, the versatility of the percussion instrument 201 can be improved.

[0104] In addition, the first fastening portion 31 for fastening the horizontal rod 100a and the second fastening portion 242 for fastening the horizontal rod 100b are integrally formed in the fastening member 230. Thus, compared with the structure in which the first fastening member 30 (first fastening portion 31) and the second fastening member 40 (second fastening portion 42) are provided as separate bodies as in the first embodiment, the number of parts can be reduced, and the work of attaching the bracket 10 and the fastening member 230 to the percussion instrument 201 can be easily performed.

[0105] In addition, the horizontal rod 100b of this embodiment is formed into a cylindrical shape with a smaller diameter than the horizontal rod 100a. Of course, the second fastening portion 242 (groove 42a) can be used to fasten the polygonal horizontal rod 100b of the same first embodiment (the same is also true in the third to sixth embodiments described later).

[0106] Next, the bracket 310 of the third embodiment will be described with reference to Fig. 8(a), Fig. 8(b) and Fig. 9(a), Fig. 9(b). In addition, the same reference numerals are given to the same parts as those of the above-mentioned embodiments and their descriptions are omitted. Fig. 8(a) is a rear perspective view of the bracket 310 of the third embodiment, and Fig. 8(b) is a cross-sectional view of the bracket 310. Fig. 9(a) is a cross-sectional view of the bracket 310 showing a state where the horizontal rod 100a is fastened by the first fastening portion 331, and Fig. 9(b) is a cross-sectional view of the bracket 310 showing a state where the horizontal rod 100b is fastened by the second fastening portion 342.

[0107] As shown in Fig. 8(a) and Fig. 8(b), the bracket 310 of the third embodiment is formed into a box shape having an opening on the frame (not shown) side of the percussion instrument. More specifically, circular insertion holes 311a and 311b for inserting the horizontal rods 100a and 100b (see Fig. 9(a) and Fig. 9(b)) are formed on the outer peripheral wall 311 of the bracket 310. These insertion holes 311a and 311b are formed in a row along the tightening direction of the tightening bolt 20 (the left-right direction of Fig. 8(b)).

[0108] The lower wall 312 extends from the lower end of the outer peripheral wall 311 toward the frame side of the percussion instrument (the front side in the vertical direction of the paper plane of FIG. 8 (a) and FIG. 8 (b)), and a pair of side walls 313 extend upward from both ends of the lower wall 312 in the tightening direction of the tightening bolt 20 (the left-right direction of FIG. 8 (b)). The upper ends of the pair of side walls 313 are connected to each other by an upper wall 314, and an insertion hole 312a and an insertion hole 314a for inserting the plumb rod 100c are formed in the lower wall 312 and the upper wall 314.

[0109] The walls 311 to 314 of the bracket 310 are integrally formed of metal, and a substantially rectangular parallelepiped cavity S surrounded by the walls 311 to 314 is formed in the bracket 310. The first fastening member 330 and the second fastening member 340 are accommodated in the cavity S through an opening formed on the frame side of the percussion instrument.

[0110] A pair of fastening parts 315 protruding toward both sides of the fastening direction of the fastening bolt 20 are integrally formed on the pair of side walls 313 , and the bracket 310 or each fastening member 330 , 340 is mounted on the frame of the percussion instrument by screwing the fastening parts 315 to the frame of the percussion instrument.

[0111] The first fastening member 330 is a resin component for fastening the horizontal rod 100 a , and the second fastening member 340 is a metal component for fastening the horizontal rod 100 b and the vertical rod 100 c .

[0112] The first fastening member 330 includes a first fastening portion 331 having an inner peripheral surface 331a with a circular cross section corresponding to the insertion hole 311a. Therefore, when the horizontal rod 100a is inserted from the insertion hole 311a (refer to FIG. 9(a)), the horizontal rod 100a is held on the inner peripheral surface 331a of the first fastening portion 331. In addition, although not shown in the figure, the insertion of the horizontal rod 100a toward the first fastening portion 331 is stopped by contact with the frame of the percussion instrument not shown. First, the structure of fastening the horizontal rod 100a using the first fastening portion 331 is described with reference to FIG. 8(a), FIG. 8(b) and FIG. 9(a).

[0113] As shown in Fig. 8(a), Fig. 8(b) and Fig. 9(a), a slit 331b is formed at the upper end of the first fastening portion 331 to divide a portion of the first fastening portion 331 in the circumferential direction (direction around the inner peripheral surface 331a). The slit 331b is a crack extending over both ends of the inner peripheral surface 331a of the first fastening portion 331 in the axial direction. By forming the slit 331b, the first fastening portion 331 formed in a substantially C-shape can be elastically deformed (deformed to narrow the width of the slit 331b).

[0114] The side surface 331c of the first fastening portion 331 facing the fastening bolt 20 is formed in an arc shape corresponding to the inner peripheral surface 331a of the first fastening portion 331 (centered on the central axis of the inner peripheral surface 331a). The partition wall 316 supporting the side surface 331c of the first fastening portion 331 stands upward from the lower wall 312 of the bracket 310. The side surface 316a of the partition wall 316 facing the first fastening portion 331 (see FIG. 8(b)) is a curved surface along the side surface 331c of the first fastening portion 331.

[0115] A recess 333 is formed on the upper end of the side surface 331c of the first fastening portion 331. The recess 333 is formed in a groove shape extending over both ends of the side surface 331c of the first fastening portion 331 in the insertion direction of the horizontal rod 100a (vertical direction of the paper surface of FIG. 9(a)).

[0116] The recessed portion 333 is a curved shape convex to the side opposite to the fastening bolt 20 side (the right side of FIG. 9(a)), and a convex portion 341 of the second fastening member 340 extending through between the upper wall 314 and the partition wall 316 is embedded in the recessed portion 333. The front end surface of the convex portion 341 is a curved shape along the recessed portion 333 (convex to the recessed portion 333 side), and a second fastening portion 342 extending downward is integrally formed at the base end (the end on the fastening bolt 20 side) of the convex portion 341.

[0117] The female screw hole 13a is formed on the side wall 313 of the bracket 310 facing the second fastening portion 342, and the concave portion 242c for inserting the shaft portion 21 of the fastening bolt 20 is formed on the side of the second fastening portion 342 facing the fastening bolt 20. Therefore, the second fastening member 340 slides toward the first fastening portion 331 by pressing the second fastening portion 342 with the fastening force of the fastening bolt 20.

[0118] As the second fastening member 340 slides, the concave portion 333 is pressed by the convex portion 341, and the first fastening portion 331 is elastically deformed in such a manner that the diameter of the inner peripheral surface 331a is reduced (the width of the slit 331b is narrowed) (see FIG. 9( a)). The horizontal rod 100a is fastened by the elastic deformation of the first fastening portion 331, thereby fixing the horizontal rod 100a to the bracket 310.

[0119] Next, a structure for fastening the horizontal rod 100 b and the vertical rod 100 c using the second fastening portion 342 will be described.

[0120] As shown in Fig. 8(a), Fig. 8(b) and Fig. 9(b), the second fastening portion 342 faces the partition wall 316 across the insertion hole 311b, and a groove 42a is formed on the side of the second fastening portion 342 facing the partition wall 316. In addition, an arc-shaped groove 316b convex to the side opposite to the groove 42a is formed on the side of the partition wall 316 facing the second fastening portion 342. The groove 316b extends along the insertion direction of the horizontal rod 100b (the vertical direction of the paper surface of Fig. 9(b)) and is connected to the inner peripheral surface of the insertion hole 311b.

[0121] Therefore, by tightening the tightening bolt 20 while the horizontal rod 100 b is inserted into the insertion hole 311 b , the horizontal rod 100 b is tightened by the insertion hole 311 b , the groove 42 a of the second tightening portion 342 , and the groove 316 b of the partition wall 316 .

[0122] In addition, as shown in Fig. 9(a), a groove 346 and a groove 316c for passing the plumb rod 100c are formed in the second fastening member 340 and the partition wall 316. The groove 346 extends up and down and is connected to the insertion hole 12a of the lower wall 312 and the insertion hole 314a of the upper wall 314. In addition, the groove 316c of the partition wall 316 also extends up and down and is connected to the insertion hole 12a of the lower wall 312.

[0123] Therefore, although not shown in the figure, the vertical rod 100c passed through the insertion hole 312a, the groove 346, and the groove 316c and inserted into the insertion hole 314a is fastened by the insertion hole 312a, the insertion hole 314a, and the groove 346, and the groove 316c.

[0124] As described above, in this embodiment, the horizontal rod 100a, the horizontal rod 100b and the vertical rod 100c can also be fastened by the first fastening portion 331 and the second fastening portion 342 of each fastening member 330, 340. Thus, the percussion instrument can be supported by two horizontal rods 100a, 100b extending in the same direction (horizontal direction) and having different diameters, and the percussion instrument can also be supported by the vertical rod 100c extending in a direction different from the horizontal rods 100a, 100b. Therefore, the versatility of the percussion instrument can be improved.

[0125] In addition, the grooves 42a and 346 formed in the second fastening portion 342 are formed at positions overlapping the shaft portion 21 of the fastening bolt 20 in the fastening direction of the fastening bolt 20 (see FIG. 9(a) ), so that the fastening force of the fastening bolt 20 is easily transmitted to the horizontal rod 100b or the vertical rod 100c. Therefore, each rod 100b, 100c can be firmly fixed to the bracket 310.

[0126] In addition, since the horizontal rod 100a is fastened by utilizing the elastic deformation of the first fastening portion 331, the fastening members 330 and 340 can be returned to their initial positions (the state before the fastening of the fastening bolt 20) by utilizing the elastic restoring force of the first fastening portion 331 by loosening the fastening bolt 20. Therefore, the first fastening portion 331 or the second fastening portion 342 can be prevented from interfering (hooking) with the insertion of the rods 100a to 100c.

[0127] In addition, the first fastening member 330 having the first fastening portion 331 and the second fastening member 340 having the second fastening portion 342 are independent parts, and are configured so that the first fastening portion 331 is elastically deformed by the sliding displacement of the second fastening member 340. Therefore, unlike the case where the first fastening portion 331 and the second fastening portion 342 are integrally formed, the elastic deformation of the second fastening portion 342 following the first fastening portion 331 can be suppressed. As a result, the second fastening portion 342 (the second fastening member 340) is easily displaced in the fastening direction of the fastening bolt 20, and thus the fastening force of the fastening bolt 20 is easily transmitted to the horizontal rod 100b or the vertical rod 100c.

[0128] Next, the fourth embodiment will be described with reference to Fig. 10(a) and Fig. 10(b). Fig. 10(a) is a cross-sectional view of a bracket 410 according to the fourth embodiment, and Fig. 10(b) is a cross-sectional view of the bracket 410 showing a state where the horizontal bars 100a and 100b are fastened by the first fastening portion 431 and the second fastening portion 442. In addition, Fig. 10(a) and Fig. 10(b) show a cross section of the bracket 410 cut along a plane corresponding to Fig. 9(a) and Fig. 9(b).

[0129] In addition, Figure 10(b) shows a state in which each horizontal rod 100a, 100b is fastened using the first fastening portion 431 and the second fastening portion 442. In fact, when the percussion instrument is supported on a drum set, any one of the rods is fastened by the first fastening portion 431 or the second fastening portion 442.

[0130] As shown in FIG. 10( a ), the bracket 410 of the fourth embodiment has the same structure as the bracket 310 of the third embodiment except that the partition wall 316 (see FIG. 9( a ) and FIG. 9( b )) is omitted. Therefore, similarly to the bracket 310 of the third embodiment, the bracket 410 is formed with insertion holes 311 a , 311 b , 312 a , and 314 a for inserting the rods 100 a to 100 c .

[0131] The fastening member 430 is a resin part for fastening the rods 100a to 100c. The fastening member 430 includes a first fastening portion 431 having a cylindrical inner peripheral surface 431a with a circular cross section corresponding to the horizontal rod 100a (insertion hole 311a), and a slit 431b is formed at the lower end of the first fastening portion 431 to divide a portion of the first fastening portion 431 in the circumferential direction (direction around the inner peripheral surface 431a). The slit 431b is a crack extending over both axial ends of the inner peripheral surface 431a of the first fastening portion 431. By forming the slit 431b, the first fastening portion 431 formed in a substantially C-shape can be elastically deformed (deformed to narrow the width of the slit 431b).

[0132] The second fastening portion 442 for fastening the horizontal rod 100b is integrally formed with the first fastening portion 431. The first fastening portion 431 and the second fastening portion 442 are both formed in a substantially rectangular parallelepiped shape, and the fastening member 430 is accommodated inside the bracket 410.

[0133] When the fastening member 430 is accommodated in the bracket 410, the shaft portion 21 of the fastening bolt 20 faces the second fastening portion 442. A recessed portion 242c is formed on the side of the second fastening portion 442 facing the fastening bolt 20, and the fastening force of the fastening bolt 20 acts on the second fastening portion 442. As a result, the fastening member 440 as a whole is elastically deformed in a compressed manner in the fastening direction of the fastening bolt 20, and the cylindrical first fastening portion 431 is elastically deformed in a manner that reduces the diameter of the inner peripheral surface 431a (narrows the width of the slit 431b).

[0134] Therefore, as shown in FIG. 10( b ), by tightening the tightening bolt 20 while the horizontal rod 100 a is inserted into the insertion hole 311 a and the first tightening portion 431 , the horizontal rod 100 a is tightened by utilizing the elastic deformation of the first tightening portion 431 .

[0135] In addition, in the present embodiment, the diameter of the inner circumferential surface 431a of the first fastening portion 431 is formed to be larger than the diameter of the insertion hole 311a, and the horizontal rod 100a is clamped between the insertion hole 311a and the inner circumferential surface 431a of the first fastening portion 431 through elastic deformation of the first fastening portion 431. However, it is of course possible to form the diameter of the inner circumferential surface 431a of the first fastening portion 431 to be smaller than the diameter of the insertion hole 311a.

[0136] In addition, as shown in Fig. 10(b), a through hole 442d connected to the insertion hole 311b (extending along the insertion direction of the horizontal rod 100b) is formed in the second fastening portion 442. Therefore, when the fastening force of the fastening bolt 20 acts on the second fastening portion 442, the second fastening portion 442 elastically deforms in a manner of slightly narrowing the through hole 442d, and along with the elastic deformation of the first fastening portion 431, the second fastening portion 442 slides and displaces.

[0137] Therefore, by tightening the tightening bolt 20 in a state where the horizontal rod 100 b is inserted into the insertion hole 311 b , the horizontal rod 100 b is clamped by the insertion hole 311 b and the through hole 442 d of the second tightening portion 442 , thereby tightening the horizontal rod 100 b .

[0138] In addition, a through hole 442e is formed in the second fastening portion 442 at a position overlapping with the insertion hole 312a and the insertion hole 314a in the vertical direction. Therefore, although not shown in the figure, the vertical rod 100c inserted into the insertion hole 314a through the insertion hole 312a and the through hole 442e is fixed to the bracket 410 by being fastened by the insertion hole 312a, the insertion hole 314a and the through hole 442e.

[0139] As described above, in this embodiment, the first fastening portion 431 and the second fastening portion 442 can also be used to fasten the horizontal rod 100a, the horizontal rod 100b and the vertical rod 100c. Thus, the percussion instrument can be supported by two horizontal rods 100a and 100b extending in the same direction (horizontal direction) and having different diameters, and the percussion instrument can also be supported by the vertical rod 100c extending in a direction different from the horizontal rods 100a and 100b. Therefore, the versatility of the percussion instrument can be improved.

[0140] In addition, in the tightening direction of the tightening bolt 20, the through holes 442d and 442e of the second tightening portion 442 are formed at positions overlapping with the shaft portion 21 of the tightening bolt 20, so that the tightening force of the tightening bolt 20 is easily transmitted to the horizontal rod 100b or the vertical rod 100c.

[0141] In addition, the first fastening portion 431 and the second fastening portion 442 for fastening the horizontal rods 100a and 100b are integrally formed, thereby reducing the number of parts and facilitating the installation of the bracket 410 and the fastening member 430 on the percussion instrument.

[0142] In addition, since the horizontal rod 100a is fastened by utilizing the elastic deformation of the first fastening portion 431, the fastening members 430 and 440 can be returned to their initial positions (the state before the fastening of the fastening bolt 20) by utilizing the elastic restoring force of the first fastening portion 431 by loosening the fastening bolt 20. Therefore, the first fastening portion 431 and the second fastening portion 442 can be prevented from interfering (hooking) with the insertion of the rods 100a to 100c.

[0143] Next, the fifth embodiment will be described with reference to Fig. 11(a) and Fig. 11(b). Fig. 11(a) is a cross-sectional view of the bracket 410 of the fifth embodiment, and Fig. 11(b) is a cross-sectional view of the bracket 410 showing a state where the horizontal bars 100a and 100b are fastened by the first fastening portion 531 and the second fastening portion 542. In addition, Fig. 11(a) and Fig. 11(b) show a cross section of the bracket 410 cut along a plane corresponding to Fig. 10(a) and Fig. 10(b).

[0144] In addition, Figure 11(b) shows the state in which the horizontal rod 100a and the horizontal rod 100b are fastened using the first fastening portion 531 and the second fastening portion 542. In fact, when the percussion instrument is supported on a drum set, any one of the rods is fastened by the first fastening portion 531 or the second fastening portion 542.

[0145] As shown in Fig. 11(a), the fastening member 530 of the fifth embodiment is a metal or resin part formed in a rectangular parallelepiped shape that is long in the fastening direction of the fastening bolt 20. The bracket 410 or the fastening member 530 is mounted on the frame of the percussion instrument by screwing the bracket 410 in which the fastening member 530 is housed to the frame of the percussion instrument. In the mounted state, a gap is formed between the pair of side walls 313 of the bracket 410 and the fastening member 530, and the fastening member 530 can slide and displace in the fastening direction of the fastening bolt 20.

[0146] The fastening member 530 includes a first fastening portion 531 having a through hole 531a with a circular cross section connected to the insertion hole 311a and a second fastening portion 542 having a through hole 542d with a circular cross section connected to the insertion hole 311b. A recess 242c is formed on the side of the second fastening portion 542 facing the fastening bolt 20, and the fastening force of the fastening bolt 20 acts on the second fastening portion 542. As a result, the fastening member 530 is slidably displaced along the fastening direction of the fastening bolt 20.

[0147] Therefore, as shown in Fig. 11(b), the horizontal rod 100a is fastened by fastening the fastening bolt 20 while the horizontal rod 100a is inserted into the insertion hole 311a and the through hole 531a of the first fastening portion 531, thereby clamping the horizontal rod 100a between the insertion hole 311a and the through hole 531a of the first fastening portion 531. Similarly, the horizontal rod 100b is fastened by fastening the fastening bolt 20 while the horizontal rod 100b is inserted into the insertion hole 311b, thereby clamping the horizontal rod 100b between the insertion hole 311b and the through hole 542d of the second fastening portion 542.

[0148] In addition, a through hole 542e extending up and down and connected to the insertion hole 312a and the insertion hole 314a is formed in the second fastening portion 542. Therefore, although not shown in the figure, the vertical rod 100c is inserted into the insertion hole 314a through the insertion hole 312a and the through hole 542e and is fixed to the bracket 410 by being fastened by the insertion hole 312a, the insertion hole 314a and the through hole 542e.

[0149] As described above, in this embodiment, the first fastening portion 531 and the second fastening portion 542 can also be used to fasten the horizontal rod 100a, the horizontal rod 100b and the vertical rod 100c. Thus, the percussion instrument can be supported by two horizontal rods 100a and 100b extending in the same direction (horizontal direction) and having different diameters, and the percussion instrument can also be supported by the vertical rod 100c extending in a direction different from the horizontal rods 100a and 100b. Therefore, the versatility of the percussion instrument can be improved.

[0150] In addition, in the tightening direction of the tightening bolt 20, the through hole 542d and the through hole 542e of the second tightening portion 542 are formed at a position overlapping with the shaft portion 21 of the tightening bolt 20, so that the tightening force of the tightening bolt 20 is easily transmitted to the horizontal rod 100b or the vertical rod 100c. Therefore, each rod 100b, 100c can be firmly fixed to the bracket 410.

[0151] In addition, the first fastening portion 531 and the second fastening portion 542 for fastening the horizontal rods 100a and 100b are integrally formed, thereby reducing the number of parts and facilitating the installation of the bracket 410 and the fastening member 530 on the percussion instrument.

[0152] Furthermore, since the bars 100 a to 100 c are fastened by sliding displacement of the fastening member 530 , fatigue of the fastening member 530 can be suppressed compared to the case where the fastening member is elastically deformed.

[0153] In addition, in the present embodiment, the fastening member 530 is held inside the bracket 410 so as to be able to slide only, but it is not necessarily limited to this. For example, an elastic body such as a spring for returning the fastening member 530 to the initial position may be arranged between the fastening member 530 and the side wall 313 of the bracket 410. The same is true in the sixth embodiment (see FIG. 12 (a) and FIG. 12 (b)) described later.

[0154] Next, the sixth embodiment will be described with reference to Fig. 12(a) and Fig. 12(b). Fig. 12(a) is a cross-sectional view of the bracket 610 of the sixth embodiment, and Fig. 12(b) is a cross-sectional view of the bracket 610 showing a state where the horizontal bars 100a and 100b are fastened by the first fastening portion 631 and the second fastening portion 642. In addition, Fig. 12(a) and Fig. 12(b) show a cross section of the bracket 610 cut along a plane corresponding to Fig. 11(a) and Fig. 11(b).

[0155] In addition, Figure 12(b) shows the state of fastening the horizontal rod 100a and the horizontal rod 100b using the first fastening portion 631 and the second fastening portion 642. In fact, when the percussion instrument is supported on a drum set, any one of the rods is fastened by the first fastening portion 631 or the second fastening portion 642.

[0156] As shown in FIG. 12( a ), the structure of the bracket 610 of the sixth embodiment is the same as that of the bracket 410 of the fifth embodiment, except that the insertion holes 311 a and 311 b provided on the outer peripheral wall 611 are arranged vertically and the outer shape of the bracket 610 is a rectangular parallelepiped that is longer vertically.

[0157] The fastening member 630 is a metal or resin part formed in a rectangular parallelepiped shape that is long in the vertical direction. The bracket 610 containing the fastening member 630 is screwed to the frame of the percussion instrument to install the bracket 610 or the fastening member 630 on the frame of the percussion instrument. In the above-mentioned installation state, a gap is formed between the pair of side walls 313 of the bracket 610 and the fastening member 630, and the bracket 610 holds the fastening member 630 so that it can slide in the fastening direction of the fastening bolt 20.

[0158] In the fastening member 630 , a first fastening portion 631 having a through hole 631 a with a circular cross section connected to the insertion hole 311 a and a second fastening portion 642 having a through hole 642 d with a circular cross section connected to the insertion hole 311 b are integrally formed.

[0159] A recessed portion 242c is formed on the side surface of the fastening member 630 facing the fastening bolt 20, and the fastening force of the fastening bolt 20 acts on the fastening member 630. As a result, the fastening member 630 is slidably displaced in the fastening direction of the fastening bolt 20.

[0160] Therefore, as shown in Fig. 12(b), the horizontal rod 100a is fastened by fastening the fastening bolt 20 while the horizontal rod 100a is inserted into the insertion hole 311a and the through hole 631a of the first fastening portion 631, thereby clamping the horizontal rod 100a between the insertion hole 311a and the through hole 631a of the first fastening portion 631. Similarly, the horizontal rod 100b is fastened by fastening the fastening bolt 20 while the horizontal rod 100b is inserted into the insertion hole 311b, thereby clamping the horizontal rod 100b between the insertion hole 311b and the through hole 642d of the second fastening portion 642.

[0161] In addition, the fastening member 630 includes a through hole 635 intersecting with each through hole 631a, 642d of the first fastening portion 631 and the second fastening portion 642, and the through hole 635 extending up and down is connected to the insertion hole 312a and the insertion hole 314a. Therefore, although not shown in the figure, the vertical rod 100c inserted into the insertion hole 314a through the insertion hole 312a and the through hole 635 is fixed to the bracket 610 by being fastened by the insertion hole 312a, the insertion hole 314a and the through hole 635.

[0162] As described above, in this embodiment, the first fastening portion 631 and the second fastening portion 642 can also be used to fasten the horizontal rod 100a, the horizontal rod 100b and the vertical rod 100c. Thus, the percussion instrument can be supported by two horizontal rods 100a and 100b extending in the same direction (horizontal direction) and having different diameters, and the percussion instrument can also be supported by the vertical rod 100c extending in a direction different from the horizontal rods 100a and 100b. Therefore, the versatility of the percussion instrument can be improved.

[0163] In addition, the first fastening portion 631 and the second fastening portion 642 for fastening the horizontal rods 100a and 100b are integrally formed, thereby reducing the number of parts and facilitating the installation of the bracket 610 and the fastening member 630 on the percussion instrument.

[0164] Furthermore, since the bars 100 a to 100 c are fastened by sliding displacement of the fastening member 630 , fatigue of the fastening member 630 can be suppressed compared to the case where the fastening member is elastically deformed.

[0165] Although the above description has been given based on the above embodiment, the present invention is not limited to the above embodiment at all, and it can be easily estimated that various improvements and modifications can be made within the scope not departing from the gist of the present invention.

[0166] In the above embodiments, the percussion instrument 1 and the percussion instrument 201 are described as electronic percussion instruments, but the present invention is not necessarily limited to this. For example, when an acoustic percussion instrument (drum) is supported by each rod 100a to 100c, the structure of the above embodiments can also be applied.

[0167] In the above-mentioned embodiments, the case where two kinds of horizontal rods 100a and 100b extending in the horizontal direction and having different diameters are fastened by the first fastening part 31, the first fastening part 331, the first fastening part 431, the first fastening part 531, the first fastening part 631 and the second fastening part 42, the second fastening part 242, the second fastening part 342, the second fastening part 442, the second fastening part 542, and the second fastening part 642 (hereinafter referred to as "fastening parts") is described, but it is not necessarily limited to this. It may be a structure in which two kinds of rods extending in the vertical direction (or in a direction inclined relative to the vertical direction) and having different diameters are fastened by the fastening parts. In the case of the above-mentioned structure, it is sufficient to change the direction of the fastening parts according to the direction in which the rods extend.

[0168] In addition, a structure in which three or more rods extending in the same direction are fastened by a fastening part instead of two rods may be used. As an example of such a structure, the following structure may be illustrated: an insertion hole for inserting three kinds of rods below the insertion hole 11b of the bracket in the first embodiment and the second embodiment is added, and the second fastening part 42 and the second fastening part 242 are extended downward, and the three kinds of rods are fastened by the extended part. In addition, as another example, the following structure may be illustrated: in addition to the insertion holes 311a and the insertion holes 311b in the fifth embodiment and the sixth embodiment, an insertion hole for inserting three kinds of rods is added, and a through hole connected to the insertion hole is formed in the fastening member 530 and the fastening member 630.

[0169] In the above-described embodiments, the fastening portion is formed at a position overlapping with the shaft portion 21 of the fastening bolt 20 in the fastening direction of the fastening bolt 20. However, the fastening portion may be formed at a position not overlapping with the shaft portion 21 of the fastening bolt 20 in the above-described direction.

[0170] In the first embodiment, the case where the protrusion 33 is formed near the slit 31b is described, but the vicinity of the slit 31b is located further downward (on the slit 31b side) than the center C of the line segment connecting the lower end of the imaginary circle V shown in Figure 5(b) (the center of the slit 31b in the circumferential direction of the inner surface 31a) and the central axis O.

[0171] In the first embodiment, a case where a pair of protrusions 33 are formed in a row along the insertion direction of the horizontal rod 100b (horizontal rod 100a) is described, but the present invention is not necessarily limited to this. For example, the protrusions 33 may be formed at both ends of the first fastening portion 31 in the insertion direction of the horizontal rod 100b, or more than three protrusions 33 may be formed in the insertion direction of the horizontal rod 100b.

[0172] In the first and second embodiments, the second fastening parts 42, 242 and the edges of the insertion holes 11b, 14a are used to clamp the horizontal rod 100b, or the second fastening parts 42, 242 and the edges of the insertion holes 8b, 12a are used to clamp the vertical rod 100c, but the present invention is not necessarily limited thereto. For example, the second fastening parts 42 and the legs 34 may be used to clamp the horizontal rod 100b and the vertical rod 100c.

Claims

1. A percussion instrument capable of being supported by a first rod and a second rod having a smaller diameter than the first rod, wherein the percussion instrument is characterized in that: include: Frame; A bracket is arranged on the outer surface of the frame; A fastening bolt is fastened toward the cavity inside the bracket; and a fastening portion that is elastically deformed or slidably displaced within the bracket by the fastening force of the fastening bolt, The bracket comprises: a first insertion hole capable of receiving the first rod to be inserted; and a second insertion hole capable of receiving the second rod through the same direction as the insertion direction of the first rod relative to the first insertion hole, The fastening portion is composed of at least a first fastening portion capable of fastening the first rod inserted into the first insertion hole, and a second fastening portion capable of fastening the second rod inserted into the second insertion hole.

2. The percussion instrument according to claim 1, characterized in that: The first fastening portion has an inner peripheral surface connected to the first insertion hole and is formed in a cylindrical shape. The first fastening portion has a slit formed therein to divide a portion thereof in a circumferential direction. The first rod is fastened by elastically deforming the first fastening portion due to the fastening force of the fastening bolt toward the second fastening portion.

3. The percussion instrument according to claim 2, characterized in that include: A first fastening member having the first fastening portion; and a second fastening member having the second fastening portion, The first fastening portion is elastically deformed by sliding displacement of the second fastening member caused by a fastening force of the fastening bolt.

4. The percussion instrument according to claim 3, characterized in that: The second fastening portion is formed at a position overlapping with a shaft portion of the fastening bolt in a fastening direction of the fastening bolt.

5. The percussion instrument according to claim 3, characterized in that: The first fastening member includes a protrusion protruding from an outer peripheral surface of the first fastening portion, The protrusion provided on the displacement trajectory of the sliding displacement of the second fastening member is pressed by the second fastening member.

6. The percussion instrument according to claim 5, characterized in that: The protrusions are formed in plurality and arranged along the insertion direction of the first rod. The second fastening portion protrudes from between the plurality of protruding portions to fasten the second rod.

7. The percussion instrument according to claim 1, characterized in that: The bracket includes a third insertion hole capable of receiving a third rod inserted in a direction different from an insertion direction of the first rod relative to the first insertion hole. The second fastening portion can fasten the third rod inserted into the third insertion hole.

8. The percussion instrument according to claim 7, characterized in that: The second fastening portion is formed at a position overlapping with a shaft portion of the fastening bolt in a fastening direction of the fastening bolt.

9. The percussion instrument according to claim 1, characterized in that: The second rod is fastened by the inner peripheral surface of the second insertion hole and the second fastening portion.

10. The percussion instrument according to claim 1, characterized in that: The first fastening portion and the second fastening portion are integrally formed.

11. The percussion instrument according to claim 1, characterized in that: The bracket holds the first fastening part and the second fastening part in a cavity inside the bracket so as to be slidable. The first rod and the second rod are fastened by sliding displacement of the first fastening portion and the second fastening portion.

12. A rod fastening method, which is a rod fastening method for a percussion instrument, wherein the percussion instrument can be supported by a first rod and a second rod having a smaller diameter than the first rod. The percussion instruments include: Frame; A bracket is arranged on the outer surface of the frame; A fastening bolt is fastened toward the cavity inside the bracket; and a fastening portion that is elastically deformed or slidably displaced within the bracket by the fastening force of the fastening bolt, The bracket comprises: a first insertion hole capable of receiving the first rod to be inserted; and a second insertion hole capable of inserting the second rod in the same direction as the insertion direction of the first rod relative to the first insertion hole, and the rod fastening method is characterized in that: The fastening portion is composed of at least a first fastening portion and a second fastening portion, The first rod inserted into the first insertion hole is fastened by the first fastening portion, and the second rod inserted into the second insertion hole is fastened by the second fastening portion.

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