WO2017038226A1 - バスドラム用消音具およびバスドラム - Google Patents
バスドラム用消音具およびバスドラム Download PDFInfo
- Publication number
- WO2017038226A1 WO2017038226A1 PCT/JP2016/069133 JP2016069133W WO2017038226A1 WO 2017038226 A1 WO2017038226 A1 WO 2017038226A1 JP 2016069133 W JP2016069133 W JP 2016069133W WO 2017038226 A1 WO2017038226 A1 WO 2017038226A1
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- WIPO (PCT)
- Prior art keywords
- hitting
- head
- bass drum
- hit
- silencer
- Prior art date
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
- G10D13/00—Percussion musical instruments; Details or accessories therefor
- G10D13/01—General design of percussion musical instruments
- G10D13/02—Drums; Tambourines with drumheads
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
- G10D13/00—Percussion musical instruments; Details or accessories therefor
- G10D13/10—Details of, or accessories for, percussion musical instruments
- G10D13/14—Mutes or dampers
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H3/00—Instruments in which the tones are generated by electromechanical means
- G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
- G10H3/14—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means
Definitions
- the present invention relates to a bass drum silencer and a bass drum.
- the present invention relates to a bass drum silencer and a bass drum that can reduce the impact sound and leave the tone characteristic of an acoustic bass drum.
- mufflers that reduce the volume generated when playing a drum in an environment where it is necessary to avoid performance at a high volume.
- a silencer member having an opening is bonded or integrally formed on a drum (tom) hitting head, and the hitting head is hit through the opening (Patent Document 1).
- Such a silencer can reduce the hitting sound by attenuating the vibration of the hitting head at an early stage by the silencer.
- Patent Document 1 free vibration of the hitting head is hindered because the sound deadening member is entirely bonded or integrally formed with the hitting head. Therefore, Patent Document 1 has a problem that a tone color peculiar to an acoustic drum is impaired.
- An object of the present invention is to provide a bass drum silencer and a bass drum, which can reduce the sound of hitting and leave a tone color peculiar to an acoustic bass drum.
- the hitting head of the acoustic bass drum is covered with the sound insulating plate. Therefore, the bass drum silencer can reduce the hitting sound by blocking the hitting sound from the hitting head generated by hitting a predetermined hitting position with the beater of the foot pedal by the sound insulating plate.
- the contact part of the sound insulation plate contacts the hitting head.
- the fixing portion provided at the periphery of the contact portion is fixed to a hoop or a hitting head that applies tension to the hitting head. Since the contact portion has an opening that opens the hitting position by the beater, the hitting head can be pushed by the beater through the opening when hitting by the beater. While the beater presses the striking head, at least a part of the contact portion that contacts the striking head at the time of non-striking is separated from the striking head, so that the contact area between the sound insulating plate and the striking head decreases. Since it is possible to suppress the free vibration of the striking surface head from being hindered by the contact between the striking surface head and the sound insulating plate, the bass drum silencer can leave a sound tone characteristic of an acoustic bass drum.
- the hitting head moves toward the sound insulation board. Since the contact portion at a portion away from the hitting head at the time of hitting comes into contact with the hitting head again, the contact area between the sound insulating plate and the hitting head increases. Thereby, after the impact, the vibration of the hitting head can be attenuated early, and the impact sound can be reduced. Therefore, the bass drum silencer has an effect of allowing the sound characteristic of the acoustic bass drum to remain while reducing the hitting sound.
- the fixing portion is made of synthetic resin or rubber having elasticity, the fixing portion can attenuate the vibration of the hitting head through the contact portion.
- the silencer for bass drum has an effect of improving the performance of reducing the hitting sound by the sound insulating plate.
- the bass drum silencer Since the fixing portion is fixed to the hoop, the bass drum silencer has, in addition to the effect of claim 1, free vibration of the hitting head compared to the case where the fixing portion is fixed to the hitting head. There is an effect that can be suppressed.
- the bass drum silencer since the resonance side sound insulation plate is in contact with the resonance head of the bass drum, vibration of the resonance head can be suppressed.
- the bass drum silencer has the effect of reducing the striking sound in addition to the effect of the first or second aspect.
- the hit part to be mounted on the hitting head is arranged at the hitting position by the beater. Therefore, the hit portion is hit with a beater instead of the hitting head, and the hitting head and the hit portion can be vibrated integrally.
- the bass drum silencer can prevent the free vibration of the striking head due to impact from being hindered, and has the effect of allowing the acoustic bass drum-specific timbre to remain.
- the bass drum silencer can buffer the impact when hitting the hit portion, and also buffer the impact transmitted to the hitting head through the hit portion during hitting. it can. Thereby, in addition to the effect in any one of Claims 1 to 3, the bass drum silencer has an effect of reducing the hitting sound generated by hitting the hit part.
- the bass drum silencer since the hit part closes the opening so as not to contact the inner periphery of the opening, the sound generated from the hitting head can be hardly leaked from the opening. Therefore, the bass drum silencer has the effect of improving the performance of reducing the hitting sound in addition to the effect of the fourth aspect.
- the height of the sound insulation plate relative to the hitting head and the height of the hit portion relative to the hitting head are the same.
- there is an effect that the appearance of the bass drum to which the bass drum silencer is attached can be improved.
- the hit portion includes a hitting surface portion that has a predetermined elasticity and is hit by a beater, and a frame portion that supports the periphery of the hitting surface portion. Since a vibration sensor for detecting vibration is attached to the frame portion, the bass drum silencer can use an acoustic bass drum as an electronic drum.
- the bass drum silencer can simplify the vibration of the frame portion as compared to the vibration of the striking surface portion. Since the vibration sensor is attached to the frame portion with simple vibration, the bass drum silencer has an effect of suppressing the erroneous detection of vibration and improving the vibration detection accuracy.
- the vibration after the hitting of the hitting head can be attenuated early by the sound insulating plate, it can be expected that the vibration of the hit portion that vibrates integrally with the hitting head is also attenuated early. Since the vibration sensor is attached to the frame portion of the hit portion, it is possible to suppress the erroneous detection of vibration after hitting and to improve the detection accuracy of vibration at the time of hitting. Therefore, the bass drum silencer has the effect of improving the vibration detection accuracy of the vibration sensor in addition to the effect of any one of claims 4 to 6.
- the bass drum according to claim 8 is an acoustic drum and includes a hoop and a striking surface head to which tension is applied by the hoop. Furthermore, the bass drum silencer according to any one of claims 4 to 7 is attached to the bass drum.
- the hit portion is attached to the hitting head via a plurality of fixtures provided on the periphery of the hit portion, and the hitting head is provided with a hitting surface opening that opens a portion surrounded by the plurality of fixtures. . Since the striking face opening is located at the position of the hit part, the bass drum has the effect of reducing the striking sound in addition to the effect of any one of claims 4 to 7.
- FIG. 4A is a cross-sectional view of a bass drum and a bass drum silencer at the time of non-striking along the line IVa-IVa in FIG. (B) is sectional drawing of the bass drum and the silencer for bass drums which shows the state where the hit part was struck.
- FIG. 6 is a cross-sectional end view of the bass drum and the bass drum silencer at the time of non-striking in line VI-VI in FIG. 5.
- FIG. 1A is a perspective view of the bass drum 1 with which the silencer 10 in 1st Embodiment of this invention was mounted
- FIG. 1B is a front view of the bass drum 1 to which the silencer 10 is mounted (viewed from the player side).
- FIG. 2 is an exploded view of the bass drum 1 and the silencer 10.
- the bass drum 1 is an acoustic in which both ends of a cylindrical shell 2 are closed with a striking head 3 and a resonance head 4 which are circular films. Is a percussion instrument.
- the bass drum 1 generates a hitting sound when the hitting head 3 is hit.
- a hook 6 a hung on an annular hoop 5 is connected by a lug 6 b fixed to the shell 2 and a tuning bolt 6 c.
- the foot pedal 7 for hitting the striking head 3 is attached to the bass drum 1.
- the foot pedal 7 strikes the hitting head 3 with a beater 8 that rotates in response to depression of the pedal 7a.
- the hitting position of the hitting head 3 by the beater 8 is determined by setting the position, length, etc. of the beater 8 according to the player's preference.
- a circular hitting surface opening 3 a penetrating in the film thickness direction is provided at the hitting position by the beater 8 of the hitting head 3, and the hitting portion 20 of the muffler 10 has a hitting surface opening. 3a is covered.
- the bass drum 1 By hitting the hit portion 20 instead of the hitting head 3, the bass drum 1 generates hitting sound.
- the hitting position by the beater 8 is a position where the hitting head 3 is hit by the beater 8 when the hitting part 20 is not attached, and when the hitting part 20 is attached, the hitting part. 20 is a position where the beater 8 is struck.
- the hitting position by the beater 8 when hitting the hitting part 20 with the beater 8 is positioned on the player side by the thickness of the hitting part 20. Therefore, the foot pedal 7 is attached to the bass drum 1 via the spacer 9 between the foot pedal 7 and the bass drum 1.
- the silencer 10 is attached to the bass drum 1 and reduces the volume generated during performance.
- the silencer 10 includes a sound insulation plate 11, a resonance side sound insulation plate 15, and a hit part 20.
- the hit portion 20 is disposed at a hitting position by the beater 8 and attached to the player side surface of the hitting head 3.
- the sound insulating plate 11 is formed in a disc shape covering the hitting head 3.
- the sound insulating plate 11 blocks the hitting sound generated from the hitting head 3 and reduces the hitting sound.
- the sound insulating plate 11 includes a contact portion 12 and a fixing portion 13.
- the contact portion 12 is a disk-shaped wooden member and contacts the hitting head 3.
- the contact portion 12 is provided with an opening portion 14 penetrating in the plate thickness direction substantially at the center.
- the contact portion 12 is provided with a step portion 12a on the surface on the striking head 3 side so as to avoid a disc portion 24 of the fixture 23 described later. Since the contact portion 12 is a wooden member, that is, since the contact portion 12 is a porous material, the sound absorbing performance of the contact portion 12 (sound insulating plate 11) can be improved, and the impact sound can be reduced.
- a wooden member a particle board, a laminated material, a fiber board, a plywood, a single board etc. are mentioned, for example.
- the fixing portion 13 is made of a flexible polyurethane foam and is formed in an annular shape.
- the fixing portion 13 is provided on the entire circumference of the peripheral edge of the contact portion 12.
- the contact portion 12 and the fixed portion 13 are integrated by bonding the fixed portion 13 to the contact portion 12.
- the fixing portion 13 is formed so that the outer diameter of the fixing portion 13 is slightly larger than the inner diameter of the hoop 5 so that the fixing portion 13 can be press-fitted into the hoop 5.
- the sound insulating plate 11 is attached to the bass drum 1 by press-fitting and fixing the fixing portion 13 into the hoop 5.
- the outer diameter dimension of the fixing portion 13 is set so that the fixing portion 13 press-fitted into the hoop 5 does not move with respect to the hoop 5 due to vibration or impact during performance.
- the opening 14 is a circular hole for releasing the hitting position by the beater 8. Therefore, the beater 8 can hit the hit portion 20 through the opening 14.
- the opening 14 is concentrically positioned with respect to the striking surface opening 3a when the sound insulating plate 11 is mounted on the bass drum 1, and has a larger diameter than the striking surface opening 3a. Thereby, the silencer 10 can secure the player side surface of the hitting head 3 which is a space for mounting the hit portion 20 inside the opening 14.
- the resonance-side sound insulation plate 15 is made of a flexible polyurethane foam and is formed in a disk shape.
- the resonance side sound insulating plate 15 is in contact with the player side surface of the resonance head 4.
- the outer diameter of the resonance-side sound insulating plate 15 is larger than the inner diameter of the shell 2 and smaller than the outer diameter of the shell 2.
- the resonance-side sound insulation plate 15 is fixed to the bass drum 1 by applying tension to the resonance head 4 by the hoop 5 with the resonance-side sound insulation plate 15 sandwiched between the end of the shell 2 and the resonance head 4. The Since the resonance-side sound insulating plate 15 can suppress the vibration of the resonance head 4, it can reduce the hitting sound.
- the resonance-side sound insulation plate 15 is positioned on the striking head 3 side of the resonance head 4, the resonance-side sound insulation plate 15 is pushed toward the resonance head 4 by an impact caused by the striking of the striking surface head 3. As a result, the resonance-side sound insulating plate 15 can be prevented from separating from the resonance head 4.
- FIG. 3A is a front view of the hit part 20 (viewed from the player side).
- FIG. 3B is a rear view of the hit part 20.
- FIG. 4A is a cross-sectional view of the bass drum 1 and the silencer 10 at the time of non-striking along the line IVa-IVa in FIG. In FIG. 4A, the hook 6a, lug 6b, and tuning bolt 6c are omitted.
- the hit portion 20 is formed in a circular shape and is hit instead of the hitting head 3.
- the hit portion 20 vibrates integrally with the hitting head 3, and shocks of hitting by the beater 8 are buffered and transmitted to the hitting head 3.
- the hit portion 20 covers the hitting surface opening 3a.
- the hit portion 20 includes a hitting surface portion 21, a frame portion 22, and a fixture 23.
- a vibration sensor 26 composed of a piezo actuator is attached to the player side of the frame portion 22. Therefore, the bass drum 1 can be used as an electronic drum by mounting the hit portion 20 on the bass drum 1.
- the hitting surface portion 21 constitutes a hitting surface hit by the beater 8.
- the hitting surface portion 21 is a film-like portion (having a predetermined elasticity) made of a stretchable net-like material.
- the striking surface portion 21 is not limited to the net-like material, and can be composed of a film-like material, elastic synthetic resin, rubber, or the like. Due to its elasticity, the hitting surface portion 21 can buffer an impact when the hitting surface portion 21 is hit, and can also buffer an impact transmitted to the hitting surface head 3 via the hit portion 20 at the time of hitting. As a result, when the hit portion 20 is hit, the hitting surface portion 21 can reduce the hitting sound generated from the hitting portion 20 and the hitting sound generated from the hitting head 3.
- the frame portion 22 supports the periphery of the hitting surface portion 21 and is disposed on the player side of the hitting head 3.
- the frame portion 22 is an annular member made of synthetic resin. Thereby, compared with the case where the frame part 22 is metal, the frame part 22 can be reduced in weight. Since the hit part 20 can be reduced in weight, the silencer 10 can reduce the impact (reaction) received by the beater 8 due to the inertia of the hit part 20 when hitting the hit part 20 with the beater 8. As a result, the silencer 10 can be brought close to the feel when the acoustic bass drum 1 is struck.
- the muffler 10 can reduce the hit part 20 in weight, when the hit part 20 is hit with the beater 8, it can suppress that the free vibration of the hitting head 3 is prevented. As a result, the muffler 10 can leave the tone unique to the acoustic bass drum 1. Furthermore, since the frame portion 22 is made of synthetic resin, the peripheral portion of the striking surface portion 21 is fixed to the frame portion 22 by insert-molding the frame portion 22 together with the striking surface portion 21 in a state where tension is applied.
- the frame portion 22 is formed to have a dimension that the inner diameter is larger than the diameter of the striking face opening 3 a and the outer diameter is slightly smaller than the diameter of the opening 14.
- the difference between the outer diameter of the frame portion 22 and the diameter of the opening portion 14 is preferably 1 mm or more and 20 mm or less, and more preferably 2 mm or more and 10 mm or less. As the difference between the outer diameter of the frame portion 22 and the diameter of the opening portion 14 is smaller, the silencer 10 can suppress sound leakage from the opening portion 14 and improve the performance of reducing the hitting sound.
- the silencer 10 can suppress the hit portion 20 being hit from contacting the sound insulating plate 11 (the inner periphery of the opening portion 14). . As a result, it is possible to suppress the free vibration of the hitting head 3 from being hindered by the contact between the hit portion 20 and the sound insulating plate 11.
- the attachment 23 is a member for mounting the hit portion 20 to the hitting head 3 while providing a gap between the frame portion 22 and the hitting head 3.
- the fixture 23 is provided on the frame portion 22 and is bonded to the hitting head 3 with an adhesive tape.
- a plurality of fixtures 23 are arranged in the circumferential direction of the frame portion 22, and are attached around the hitting surface opening 3 a of the hitting head 3.
- five fixtures 23 are arranged at equal intervals in the circumferential direction of the frame portion 22. It should be noted that the number of fixtures 23 is not limited to five, and it is possible to arrange four or less fixtures 23 or more.
- the silencer 10 can suppress the contact area between the hit portion 20 and the hitting head 3 by the fixture 23 as compared with the case where the entire frame portion 22 is bonded to the hitting head 3. As a result, it is possible to suppress the free vibration of the hitting head 3 from being hindered by contact with the hit portion 20.
- the fixture 23 is a rubber member. Note that the fixture 23 is not limited to rubber, and a synthetic resin fixture 23 having elasticity can be used. Since the fixture 23 has elasticity, the impact transmitted to the hitting head 3 from the hit part 20 by the hit of the beater 8 can be buffered by the fixture 23, and the impact sound can be reduced.
- the fixture 23 includes a disk portion 24 and a shaft portion 25.
- the disc portion 24 is bonded to the hitting head 3 by adhering an adhesive tape. Since the disk portion 24 can secure the bonding area between the hitting head 3 and the fixture 23, it is possible to make it difficult to drop the hit portion 20 from the hitting head 3.
- the shaft portion 25 is formed in a cylindrical shape, is erected on the disc portion 24 and is fixed to the frame portion 22.
- FIG. 4B is a cross-sectional view of the bass drum 1 and the silencer 10 showing a state in which the hit portion 20 has been hit.
- the hook 6a, lug 6b and tuning bolt 6c are omitted.
- the silencer 10 can leave the tone characteristic of the acoustic bass drum 1.
- the hitting head 3 moves toward the sound insulating plate 11. Thereby, the contact area of the hitting head 3 and the sound insulating plate 11 increases. Since the silencer 10 can quickly attenuate the vibration of the hitting head 3 by the contact between the hitting head 3 and the sound insulating plate 11, the hitting sound after hitting can be reduced. Therefore, the muffler 10 can leave the timbre unique to the acoustic bass drum 1 while reducing the striking sound.
- the silencer 10 is sealed between the fixed portion 13 and the hoop 5 by the fixed portion 13 that is press-fitted into the hoop 5, an air entrance path between the sound insulating plate 11 and the hitting head 3 is provided. It can be limited to the opening 14 side. As a result, the muffler 10 can make it harder to separate the striking head 3 from the sound insulating plate 11, so that the amplitude of the striking head 3 can be made smaller and the striking sound can be further reduced. Moreover, since the muffler 10 has the striking surface opening 3a located at the position of the striking portion 20, which is the portion where the amplitude of the striking surface head 3 becomes the largest at the time of striking, the striking sound can be reduced.
- the silencer 10 can prevent interference between the disc portion 24 and the contact portion 12 by the step portion 12a, a contact area between the hitting head 3 and the contact portion 12 can be secured. Since the silencer 10 can ensure the damping performance of the vibration of the hitting head 3 due to the contact with the sound insulating plate 11 after hitting, it can ensure the reduction performance of the hitting sound. Further, the outer diameter dimension of the fixing portion 13 is set so that the fixing portion 13 press-fitted into the hoop 5 does not move with respect to the hoop 5 due to vibration or impact during performance. As a result, the silencer 10 can prevent the performance of reducing the hitting sound from being lowered during the performance, and can ensure the performance of reducing the hitting sound.
- the fixing portion 13 is made of flexible polyurethane foam, the vibration of the hitting head 3 can be attenuated via the contact portion 12. Thereby, the silencer 10 can improve the performance of reducing the impact sound by the sound insulating plate 11. Moreover, since the fixing
- the shell 2 (the entire bass drum 1) vibrates by transmitting vibration from the hitting head 3 at the time of hitting to the hoop 5 via the fixing portion 13.
- the fixing portion 13 is made of a flexible polyurethane foam
- the silencer 10 can attenuate vibrations transmitted to the hoop 5 through the fixing portion 13. Therefore, the silencer 10 can suppress the generation of abnormal noise due to the vibration of the shell 2 (the entire bass drum 1).
- the frame portion 22 made of synthetic resin has higher rigidity than the striking surface portion 21 that is a net-like material, the vibration of the frame portion 22 can be simplified compared to the vibration of the striking surface portion 21 and the vibration of the striking surface head 3 due to impact. Since the vibration sensor 26 is attached to the frame portion 22 with simple vibration, the silencer 10 can suppress the erroneous detection of vibration and improve the detection accuracy of vibration.
- the hitting position by the beater 8 changes up and down by setting the length of the beater 8 according to the player's preference.
- the hitting position by the beater 8 extends left and right.
- the dimensions of the hitting surface portion 21 are set so that the hitting surface portion 21 is positioned at the hitting position by these beaters 8.
- the sensitivity of the vibration sensor 26 may change depending on the hit position by the beater 8.
- the silencer 10 can make the sensitivity distribution of the vibration sensor 26 uniform even if the hitting position by the beater 8 is different.
- the silencer 10 can attenuate the vibration after hitting the striking head 3 with the sound insulating plate 11 at an early stage, it can be expected that the vibration of the hit part 20 that vibrates integrally with the striking head 3 will also be attenuated at an early stage. . Since the vibration sensor 26 is attached to the frame portion 22 of the hit portion 20, the silencer 10 can be expected to improve the detection accuracy of vibration at the time of hitting by suppressing erroneous detection of vibration after hitting.
- the hitting head 3 of the bass drum 1 may resonate.
- the vibration sensor 26 may detect the vibration of the hitting head 3 due to the resonance, and a speaker connected to the vibration sensor 26 may sound erroneously.
- the sound insulating plate 11 is in contact with the hitting head 3. Therefore, the silencer 10 can suppress the vibration of the hitting head 3 due to resonance, and can reduce the vibration of the hitting head 3 even if the hitting head 3 resonates. Accordingly, the silencer 10 can suppress erroneous detection by suppressing erroneous detection of vibration of the hitting head 3 due to resonance.
- the bass drum silencer 31 (hereinafter referred to as “the silencer 31”) in the second embodiment will be described with reference to FIGS.
- the silencer 31 In the first embodiment, the case where the hit part 20 is mounted on the player side surface of the hitting head 3 has been described. In contrast, in the second embodiment, a case where the hit part 40 is mounted on the surface of the striking head 3 on the resonance head 4 side will be described.
- symbol is attached
- FIG. 5 is a perspective view of the bass drum 30 to which the silencer 31 according to the second embodiment is mounted.
- FIG. 6 is a cutaway end view of the bass drum 30 and the muffler 31 during non-striking along the line VI-VI in FIG.
- the silencer 31 is attached to the bass drum 30 to reduce the volume generated during performance.
- the silencer 31 includes a sound insulation plate 32 and a hit part 40.
- the hit portion 40 is formed in a circular shape and is attached to the surface of the striking head 3 on the resonance head 4 side.
- the hit portion 40 is hit by the beater 8 instead of the hitting head 3 by projecting to the player side through the hitting aperture 3a.
- the sound insulating plate 32 is formed in a disc shape and covers the hitting head 3.
- the sound insulating plate 32 blocks the hitting sound generated from the hitting head 3 and reduces the hitting sound.
- the sound insulating plate 32 includes a contact portion 12 and a fixing portion 33.
- the contact portion 12 is a disk-shaped wooden member and contacts the hitting head 3.
- the contact portion 12 is provided with a circular opening 36 penetrating in the plate thickness direction substantially at the center.
- the contact portion 12 is provided with a step portion 12a on the surface on the hitting head 3 side so as to avoid a disc portion 42 of the fixture 41 described later.
- the fixing part 33 is made of urethane rubber and is formed in an annular shape.
- the fixing portion 33 is provided on substantially the entire circumference of the peripheral edge of the contact portion 12.
- the fixed portion 33 is integrally formed with an extending portion 34 made of urethane rubber extending from the periphery along the hoop 5 to the outside in the axial direction of the fixed portion 33.
- the extending part 34 is not limited to urethane rubber, but can be made of non-metal or metal different from the material of the fixing part 33.
- the fixed portion 33 and the extended portion 34 are integrated by embedding the extended portion 34 in the fixed portion 33 or bonding the extended portion 34 to the fixed portion 33.
- the fixing portion 33 is bonded to the outer peripheral surface of the contact portion 12.
- the opening 36 is a circular hole for releasing the hitting position by the beater 8. Therefore, the beater 8 can hit the hit portion 40 through the opening 36.
- the opening 36 is arranged concentrically with the striking surface opening 3a when the sound insulating plate 32 is attached to the bass drum 30, and has a slightly larger diameter than the striking surface opening 3a.
- the muffler 31 reduces the gap between the hit portion 40 and the opening 36 that protrudes from the hitting surface opening 3a, while the hit hit portion 40 causes the sound insulating plate 32 (the inner periphery of the opening 36). ) Can be suppressed.
- the muffler 31 can reduce sound leakage from between the hit portion 40 and the opening 36 and also prevents free vibration of the hitting head 3 by contact between the hit portion 40 and the sound insulation plate 32. Can be suppressed.
- the hitting portion 40 is struck by the beater 8 instead of the hitting head 3, and thus vibrates integrally with the hitting head 3, and shocks of hitting by the beater 8 are buffered and transmitted to the hitting head 3.
- the hit portion 40 is mounted on the surface of the striking head 3 on the resonance head 4 side and protrudes from the striking surface opening 3a to the player side. Thereby, the hit
- the hit portion 40 includes a hitting surface portion 21, a frame portion 22, a fixture 41, a cushion portion 47, and a hard body 48.
- the frame portion 22 is arranged on the resonance head 4 side of the hitting head 3.
- the cushion portion 47 and the hard body 48 are portions projecting from the hitting surface opening 3a to the player side.
- a vibration sensor 26 composed of a piezo actuator is attached to the resonance head 4 side of the frame portion 22 of the hit portion 40. Therefore, the silencer 31 can use the bass drum 30 as an electronic drum by mounting the hit portion 40 on the bass drum 30.
- the wiring is passed between the hit portion 40 and the opening 36.
- An example is a case where wiring is passed through a hole (not shown) formed at an arbitrary position of the surface head 3 and the sound insulating plate 32.
- the attachment 41 is a rubber pin for attaching the frame portion 22 to the hitting head 3.
- the fixture 41 includes a disc part 42 and a shaft part 43.
- the shaft portion 43 is a cylindrical portion that is erected at the center of the disc portion 42.
- the shaft portion 43 is press-fitted into the through hole 22a having a circular cross section provided through the frame portion 22 in the axial direction and the through hole 3b provided through the hitting head 3 in a circular shape in the film thickness direction.
- the hitting portion 40 is mounted on the hitting head 3.
- the fixture 41 is not limited to rubber, and a synthetic resin fixture 41 having elasticity can be used.
- the through hole 22a includes a small diameter portion 22b and a large diameter portion 22c.
- the large diameter portion 22c is positioned closer to the striking head 3 than the small diameter portion 22b, and has a larger diameter than the small diameter portion 22b.
- the through holes 22a are provided at five equal intervals in the circumferential direction of the frame portion 22.
- the through hole 3b is a hole having substantially the same diameter as the large diameter portion 22c.
- the through holes 3b are provided around the striking face opening 3a and at positions corresponding to the through holes 22a.
- the shaft portion 43 has substantially the same diameter as the through hole 3b and the large diameter portion 22c.
- the shaft portion 43 includes a distal end portion 44, an annular portion 45, and a groove portion 46.
- the front end portion 44 is a portion for facilitating insertion of the shaft portion 43 into the through hole 22a and the through hole 3b.
- the distal end portion 44 is formed in a tapered shape that gradually decreases in diameter toward the distal end.
- the annular portion 45 is a portion for facilitating insertion of the shaft portion 43 into the through hole 3 b and fixing the shaft portion 43 to the hitting head 3 by fitting the hitting head 3 between the disc portion 42. It is.
- the annular portion 45 is enlarged in an annular shape by providing an interval corresponding to the film thickness of the striking head 3 between the annular portion 45.
- the groove part 46 is a concave part provided between the tip part 44 and the annular part 45.
- the groove portion 46 has substantially the same diameter as the small diameter portion 22b and has substantially the same length as the small diameter portion 22b. Therefore, the shaft portion 43 can be fixed to the frame portion 22 by fitting the small diameter portion 22 b into the groove portion 46.
- the shaft part 43 is set so that the length from the disk part 42 to the groove part 46 is larger than the length of the large diameter part 22c of the through hole 22a. Therefore, the silencer 31 can attach the hit portion 40 to the hitting head 3 while providing a gap between the frame portion 22 and the hitting head 3.
- the silencer 31 can suppress the contact area between the hit portion 40 and the hitting head 3 with the fixture 41 as compared with the case where the entire frame portion 22 is bonded to the hitting head 3. As a result, it is possible to suppress the free vibration of the hitting head 3 from being prevented by contact with the hit portion 40.
- the cushion portion 47 is made of a cylindrical flexible polyurethane foam and is attached to the player side surface of the striking surface portion 21.
- the cushion portion 47 is formed to have a dimension in which the outer diameter is slightly smaller than the diameter of the striking face opening 3a. Thereby, it can prevent that the cushion part 47 contacts the striking face head 3 (inner circumference of the striking face opening part 3a) at the time of impact.
- the muffler 31 can suppress the free vibration of the striking head 3 and the hit portion 40 that are connected to each other via the rubber attachment 41.
- the hard body 48 is a circular woven fabric, and is provided on the surface opposite to the surface attached to the striking surface portion 21 of the cushion portion 47.
- the hard body 48 is harder than the cushion portion 47 and is formed to have substantially the same size as the outer diameter of the cushion portion 47.
- the cushion portion 47 is not limited to a flexible polyurethane foam, and other soft foamed synthetic resins can be used.
- the hard body 48 is not limited to a woven fabric, and it is possible to use a non-woven fabric, a rubber sheet, or the like.
- the silencer 31 can buffer the impact on the hitting surface portion 21 by the cushion portion 47. Thereby, the silencer 31 can reduce the striking sound generated when the hit portion 40 is hit. Since the hard body 48 is harder than the cushion portion 47, it is difficult to bend. Thereby, although the striking position by the beater 8 is substantially constant, the silencer 31 can disperse the impact applied to the cushion portion 47 and the striking surface portion 21 from the hard body 48 at the time of striking. Thereby, it can suppress that a part of cushion part 47 deteriorates resulting from an impact concentrating on a part of cushion part 47 and the hitting face part 21, and can suppress that a part of hitting face part 21 extends. . As a result, the silencer 31 can improve the durability of the cushion portion 47 and the hitting surface portion 21.
- the hit part 40 is a surface hit by the beater 8.
- the height from the striking surface head 3 to the hard body 48 which is the surface closest to the player side, is the same as the height from the striking surface head 3 to the player side surface of the sound insulating plate 32. Is set as follows. Thereby, the appearance of the bass drum 30 to which the silencer 31 is attached can be improved.
- the present invention has been described above based on the embodiments. However, the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. Easy to guess.
- the hit portions 20 and 40 are mounted on the hitting head 3 has been described, but the present invention is not necessarily limited thereto. Of course, it is possible to omit the hit parts 20 and 40. In this case, the hitting surface opening 3a provided in the hitting head 3 at the position where the hitting portions 20 and 40 are mounted is also omitted, so that the beater 8 directly hits the hitting head 3 through the openings 14 and 36. it can.
- the hitting surface opening 3a is provided in the hitting head 3
- the present invention is not necessarily limited thereto.
- the hit part 20 is attached to the player side surface of the hitting head 3
- the hit portion 40 is mounted on the surface of the striking head 3 on the resonance head 4 side.
- the striking surface portion 21 With the striking surface portion 21 positioned at the position of the striking surface opening 3a, the striking head 3 and the striking surface portion 21 are sandwiched from both sides by a pair of frame portions so that the hit portion is mounted on the striking surface head 3. Is of course possible.
- the hit part 20 including the hitting surface part 21, the frame part 22, and the fixture 23 has been described.
- the hit portion 40 including the cushion portion 47 and the hard body 48 in addition to the hitting surface portion 21, the frame portion 22, and the fixture 41 has been described.
- the appearance of the hit portion 20 can be improved by setting the height of the hard body 48 relative to the striking surface portion 21 so as to be the same as the height of the frame portion 22 relative to the striking surface portion 21. Furthermore, it is possible to set so that the height of the hit part 20 (the frame part 22 and the hard body 48) with respect to the hitting head 3 and the height of the sound insulating plate 11 with respect to the hitting head 3 are the same. Thereby, the appearance of the bass drum 1 to which the silencer 10 is attached can be further improved.
- the present invention is not necessarily limited thereto. It is also possible to bond and fix the fixing portion to the hitting head 3. In this case, it is possible to cover a part of the hitting head 3 with the sound insulating plate by setting the size or shape of the fixing portion (sound insulating plate) so that a predetermined gap is provided between the fixing unit and the hoop 5. It is. It is also possible to fix the fixed part to the hitting head 3 by sandwiching the fixing part between the hook 6 a and the hitting head 3. It is also possible to bond and fix the fixing portion to the hoop 5.
- the contact portion 12 is a wooden member.
- the present invention is not necessarily limited thereto. Even if the contact portion is deformed by impact at the time of impact, the material of the contact portion can be appropriately changed as long as the contact portion is rigid enough not to contact the hitting head 3 pressed by the beater 8.
- a contact portion made of synthetic resin or rubber can be used.
- hard foamed synthetic resin or foamed rubber for the contact portion, the sound absorption characteristics of the contact portion (sound insulating plate) can be improved, and the impact sound can be reduced.
- the hard foamed synthetic resin include polyurethane foam, polyisocyanurate foam, phenol foam, polystyrene foam, polyethylene foam, and polypropylene foam.
- the fixing portion 13 is made of flexible polyurethane foam.
- the fixing portion 33 is made of urethane rubber.
- fixed part is the same, it is possible to shape
- the contact part and the fixed part integrally by heat-sealing the contact part and the fixed part by two-color molding etc. It is.
- the resonance-side sound insulating plate 15 is made of a flexible polyurethane foam
- the present invention is not necessarily limited thereto.
- the material of the resonance-side sound insulating plate 15 can be changed as appropriate.
- the bass drum silencer uses foamed synthetic resin or foamed rubber for the resonance-side sound insulation board, so that the sound absorption characteristics of the resonance-side sound insulation board can be improved and the impact sound can be reduced.
- the resonance side sound insulating plate 15 is sandwiched and fixed between the end portion of the shell 2 and the resonance head 4
- the present invention is not necessarily limited thereto.
- An elastic synthetic resin or rubber is provided on the periphery of the resonance-side sound insulation plate 15, and the resonance-side sound insulation plate 15 is pressed into the shell 2 and fixed, or the resonance-side sound insulation plate 15 is bonded and fixed to the resonance head 4.
- the resonance-side sound insulating plate 15 is bonded to the resonance head 4, it is preferable that the resonance-side sound insulating plate 15 is bonded to the entire surface of the resonance head 4 on the striking head 3 side so as not to contact the shell 2.
- the resonance-side sound insulating plate 15 is preferably made of a flexible polyurethane foam having an outer diameter slightly smaller than the inner diameter of the shell 2 and a thickness of about 10 mm. Further, the resonance-side sound insulating plate 15 can be bonded to the surface of the resonance head 4 opposite to the striking surface 3 side. In this case, since the resonance head 4 and the resonance side sound insulation plate 15 are bonded, it is possible to prevent the resonance side sound insulation plate 15 from being separated from the resonance head 4 due to an impact at the time of impact.
- the resonance head 4 It is also possible to omit the resonance head 4 and press the periphery of the resonance side sound insulation plate 15 with the hoop 5 to fix only the resonance side sound insulation plate 15 to the shell 2. Further, the resonance-side sound insulating plate 15 can be omitted regardless of the presence or absence of the resonance head 4.
- the resonance-side sound insulation plate 15 has an outer diameter that is the same as or slightly smaller than the inner diameter of the shell 2, and is made of a foamed synthetic resin having a thickness of about several millimeters and has a predetermined air permeability. That is, the resonance side sound insulation plate 15 having air permeability is bonded to the inside of the resonance head 4 provided with the opening. Accordingly, the bass drum silencer appropriately removes the air compressed in the shell 2 when the striking head 3 is struck from the opening provided in the resonance head 4 and the resonance-side sound insulating plate 15 to the outside of the shell 2.
- the bass drum silencer can suppress the vibration of the resonance head 4 and reduce the hitting sound.
- the bass drum silencer can bond the outer peripheral side of the resonance-side sound insulation plate 15 only to the resonance head 4 so that the air in the shell 2 can be discharged to the outside more appropriately, and the impact sound can be further reduced.
- the hit portion 20 is attached to the hitting head 3 by being bonded to the hitting head 3 with the adhesive tape of the fixture 23 has been described.
- worn with the hitting head 3 with the fixture 41 which is a pin was demonstrated.
- the vibration sensor 26 configured by a piezo actuator is attached to the hit parts 20 and 40
- the present invention is not necessarily limited thereto. It is naturally possible to use an electromagnetic induction type vibration sensor or a capacitance type vibration sensor. Moreover, it is also possible to use the bass drums 1 and 30 equipped with the mufflers 10 and 31 as practice bass drums without attaching the vibration sensor 26.
- the silencers 10 and 31 can suppress the vibration of the hitting head 3 to which the hit portions 20 and 40 are mounted by the mass of the weight, and can reduce the hitting sound.
- a plate material made of iron or the like having an outer diameter substantially the same as the outer diameter of the frame portion 22 of the hit portion 40 is used as a weight, and the plate material is attached to the resonance head 4 side of the frame portion 22 with the fixture 41. It is possible to fix with.
- a through hole having the same diameter is provided in the plate at the same position as the small diameter portion 22 b of the through hole 22 a of the frame portion 22, and the shaft portion 43 of the fixture 41 is press-fitted into the through hole 22 a of the frame portion 22. Thereafter, the plate member can be attached to the hit portion 40 by press-fitting the shaft portion 43 into the through hole of the plate member. Furthermore, by attaching a different plate material to the plate material with bolts, nuts, rivets, etc., or changing the mass of the plate material by changing the material or thickness of the plate material, the weight (plate material) attached to the hit part 40 The mass can be adjusted.
- the vibration sensor 26 by attaching the vibration sensor 26 to the center of the plate member attached to the hit portion 40 on the resonance head 4 side, the vibration from the hit portion 40 can be evenly transmitted to the vibration sensor 26. As a result, the bass drum silencer can make the sensitivity distribution of the vibration sensor 26 uniform even if the hit position by the beater 8 is different.
- the bass drum silencer can further reduce the striking sound.
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Abstract
Description
3 打面ヘッド
3a 打面開口部
5 フープ
7 フットペダル
8 ビータ
10,31 バスドラム用消音具
11,32 遮音板
12 接触部
13,33 固定部
14,36 開口部
15 共鳴側遮音板
20,40 被打撃部
21 打面部
22 枠部
23,41 取付具
26 振動センサ
Claims (8)
- フットペダルのビータで所定の打撃位置が打撃されることで打撃音を発生するアコースティックのバスドラムの打面ヘッドを覆う遮音板を備え、
前記遮音板は、前記ビータによる打撃位置を開放する開口部を有すると共に前記打面ヘッドに接触する接触部と、
前記接触部の周縁に設けられると共に、前記打面ヘッドに張力を付与するフープ又は前記打面ヘッドに固定される固定部とを備え、
非打撃時に前記打面ヘッドと接触する前記接触部の少なくとも一部が、前記ビータによる打撃時に前記打面ヘッドから離れると共に打撃後に再び前記打面ヘッドと接触することを特徴とするバスドラム用消音具。 - 前記固定部は、弾性を有する合成樹脂製またはゴム製であり、前記フープに固定されることを特徴とする請求項1記載のバスドラム用消音具。
- 前記バスドラムの共鳴ヘッドと接触する共鳴側遮音板を備えていることを特徴とする請求項1又は2に記載のバスドラム用消音具。
- 所定の弾性を有し、前記ビータによる打撃位置に配置されると共に前記打面ヘッドに装着される被打撃部を備えていることを特徴とする請求項1から3のいずれかに記載のバスドラム用消音具。
- 前記被打撃部は、前記開口部の内周に接触しないように前記開口部を塞ぐことを特徴とする請求項4記載のバスドラム用消音具。
- 前記打面ヘッドに対する前記遮音板の高さと、前記打面ヘッドに対する前記被打撃部の高さとが同一であることを特徴とする請求項4又は5に記載のバスドラム用消音具。
- 前記被打撃部は、所定の弾性を有すると共に前記ビータにより打撃される打面部と、前記打面部の周縁を支持すると共に前記打面部よりも剛性が高く設定される枠部とを備え、
前記枠部に取り付けられると共に振動を検出する振動センサを備えていることを特徴とする請求項4から6のいずれかに記載のバスドラム用消音具。 - フープと、前記フープにより張力が付与される打面ヘッドとを備え、請求項4から7のいずれかに記載のバスドラム用消音具が装着されるアコースティックのバスドラムにおいて、
前記被打撃部は、周縁に設けられる複数の取付具を介して前記打面ヘッドに装着され、
前記打面ヘッドは、前記複数の取付具に囲まれた部分を開放する打面開口部を備えていることを特徴とするバスドラム。
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CN201680043446.XA CN107851427B (zh) | 2015-09-04 | 2016-06-28 | 低音大鼓用消音件及低音大鼓 |
US15/756,984 US10163426B2 (en) | 2015-09-04 | 2016-06-28 | Bass drum damper and bass drum |
EP16841258.3A EP3346461B1 (en) | 2015-09-04 | 2016-06-28 | Bass drum damper and bass drum |
JP2017537611A JP6741672B2 (ja) | 2015-09-04 | 2016-06-28 | バスドラム用消音具およびバスドラム |
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EP (1) | EP3346461B1 (ja) |
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CN107851427B (zh) | 2021-12-28 |
EP3346461A4 (en) | 2019-08-14 |
US10163426B2 (en) | 2018-12-25 |
CN107851427A (zh) | 2018-03-27 |
EP3346461B1 (en) | 2021-06-16 |
EP3346461A1 (en) | 2018-07-11 |
JP6741672B2 (ja) | 2020-08-19 |
US20180261192A1 (en) | 2018-09-13 |
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