JP2018045174A - Drum head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drum head with which a feeling close to a performance feeling of an acoustic drum can be obtained while sound volume is properly reduced.SOLUTION: A drum head 1 has a mesh pat 10, a patch part 20 and a fresh hoop 30. The mesh part 10 is a mesh-like member with air permeability. The mesh part 10 is held by the fresh hoop 30. The patch part 20 is a film-like member with no air permeability. The patch part 20 is processed into a circular shape. A diameter of the patch part 20 is approximately a half as large as a diameter of the mesh part 10. The patch part 20 is arranged in the center of the drum head 1. The patch part 20 is fastened to the mesh part 10 by heat welding to deform integrally with the mesh part 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drum head stretched around an open end of a shell of an acoustic drum.

  When playing an acoustic drum (hereinafter simply referred to as a drum), a loud sound is generated. When performing drum performance at home or the like, it is preferable to reduce the volume so as not to disturb nearby neighbors.

  As a first example of the means for reducing the volume, it is possible to mute the generated sound by bringing a sponge material into contact with the drum head stretched around the open end of the drum shell. According to this aspect, the vibration of the drum head can be quickly attenuated by the sponge material, so that the sustain (remanent) can be shortened. However, in this aspect, the vibration at the moment of impact cannot be sufficiently reduced, and the volume level at the moment of impact cannot be reduced.

  As a second example of the means for reducing the volume, a drum head made of a mesh-like material having air permeability is stretched around the open end of the shell. In this aspect, since air passes through the gap of the mesh of the drum head, even if the drum head is hit and the drum head vibrates, the vibration of the drum head is not transmitted to the air. For this reason, according to this aspect, the sound according to the vibration is not radiated so much, and the volume of the drum sound can be sufficiently reduced.

JP 2014-48651 A

  However, when a performance operation (specifically, striking) is performed on a drum head made of a mesh-like material, the volume of the drum sound is extremely small, so it may be good in that it does not disturb the neighborhood. The performers complained that they wanted a sound with a moderate volume. In addition, a drum head made of a mesh-like material has a problem that the feel (ie, hit feeling) when performing a performance operation is far from the feel of a normal drum head. In addition, the drum head made of a mesh-like material has a problem that the sound quality of the drum sound is far from the sound quality of the normal drum sound. As described above, in a drum head made of a mesh-like material, the volume is extremely small and the feel and sound quality are greatly different from those of a normal drum head.

  Patent Document 1 discloses a drum head including a pair of outer layer heads made of a mesh (net-like) material and an intermediate layer head disposed therebetween. The middle layer head is formed smaller than the inner circumferential circle of the shell, and is made of a mesh-like material having air permeability like the outer layer head. The middle layer head is not joined to each of the outer layer heads. Patent Document 1 describes that, when this drum head is used, it is possible to obtain a hitting feeling that approximates the feel when hitting a normal drum head while reducing the hitting sound.

  However, even when the drum head of Patent Document 1 is used, the volume of the drum sound remains extremely low, and the hit feeling is not sufficiently close to the hit feeling when hitting a normal drum head. Moreover, in the drum head of Patent Document 1, the sound quality of the drum sound is not sufficiently close to the sound quality of the normal drum sound. Therefore, even if the drum head of Patent Document 1 is used for performance practice, it is not possible to obtain a feeling close to that of a normal drum performance, and the performance practice cannot be performed effectively.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a drum head capable of obtaining a feeling close to that of an acoustic drum while appropriately reducing the volume.

  The present invention has a drum comprising: a mesh portion having an outer edge fixed to a fresh hoop; and a film-like patch portion that is fixed to the mesh portion and prevents ventilation of a part of the mesh portion. Provide the head.

  When the drum head according to the present invention is stretched on the open end of the shell, air can move in and out of the shell through the mesh gap in the area covered by the mesh portion on the open face of the open end. In the area covered by the patch portion on the opening surface of the end, the movement of air inside and outside the shell is hindered by the patch portion. Thereby, in the mesh part, the vibration of the mesh part is not transmitted to the air so much and the sound corresponding to the vibration is not generated so much, whereas in the patch part, the vibration of the patch part is transmitted to the air and the sound corresponding to the vibration is generated. . For this reason, when this drum head is used, the volume can be reduced as compared with a normal drum head that is entirely film-like, and the volume can be increased compared to a drum head that is entirely composed of a mesh-like material. it can. That is, when this drum head is used, the sound volume can be appropriately reduced.

  Also, in this drum head, the patch part, which is the part that generates sound in response to vibration, is fixed to the mesh part, so when tension is applied to the mesh part, the same tension as the mesh part is applied to the patch part. Take it. As a result, the feel when the performance operation is performed on the patch portion is close to the feel when the performance operation is performed on a normal drum head. Further, since tension is also applied to the patch portion, the vibration of the patch portion due to the performance operation becomes close to the vibration of a normal drum head. That is, when playing with this drum head, it is possible to obtain a feeling close to that of a normal drum.

  Therefore, according to the drum head of the present invention, it is possible to obtain a feeling close to that of an acoustic drum while appropriately reducing the volume.

1 is a plan view showing a configuration of a drum head 1 according to a first embodiment of the present invention. 1 is a cross-sectional view showing a configuration of a drum head 1. FIG. 2 is an enlarged cross-sectional view showing a part of a cross section of the drum head 1. It is sectional drawing which shows a part of cross section of the drum with which the drum head 1 was stretched. It is a top view which shows the structure of the drum head 1A which is 2nd Embodiment of this invention. It is a top view which shows the structure of the drum head 1B which is 3rd Embodiment of this invention. It is sectional drawing which shows the structure of the drum C which is an example of the drum using the drum head 1 of 1st Embodiment. It is sectional drawing which shows the structure of the drum D which is another example of the drum using the drum head 1 of 1st Embodiment. FIG. 3 is a plan view of the drum D as viewed from the drum head 6 side. It is a top view which shows the structure of the drum head 1E which is 6th Embodiment of this invention. It is sectional drawing which shows a part of cross section of the drum head 1E. It is sectional drawing which shows a part of cross section of the drum head 1F which is 7th Embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
<First Embodiment>
FIG. 1 is a plan view showing a configuration of a drum head 1 according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view showing the configuration of the drum head 1. FIG. 3 is an enlarged cross-sectional view showing a part of the cross section of the drum head 1. The drum head 1 is a member that is stretched at the open end of a cylindrical shell in a drum such as a tom, snare, or bass drum.

  The drum head 1 has a mesh part 10, a patch part 20, and a fresh hoop 30. The fresh hoop 30 is a ring-shaped member whose inner diameter is larger than the outer diameter of the shell. The cross-sectional shape perpendicular to the circumferential direction of the fresh hoop 30 is substantially U-shaped (see FIG. 3). The fresh hoop 30 is made of aluminum, for example. Inside the ring of the fresh hoop 30, the mesh part 10 and the patch part 20 are arrange | positioned.

  The mesh part 10 is a mesh-like member having air permeability. More specifically, the mesh portion 10 is made by knitting a wire made of polyester (more specifically, polyethylene terephthalate) having a wire diameter of about 200 μm with an aperture ratio of about 50%. The mesh unit 10 is knitted with a plain weave, for example, but may be knitted with a twill. The mesh portion 10 is processed into a circular shape and is processed into a bowl shape in which the vicinity of the outer edge is bent.

  The outer edge of the mesh part 10 is inserted inside the fresh hoop 30 having a U-shaped cross section and is fixed to the fresh hoop 30 with an adhesive. Thereby, the mesh part 10 is held by the fresh hoop 30. Note that the outer edge of the mesh portion 10 may be fixed to the fresh hoop 30 by mechanically pressing the portion inserted into the fresh hoop 30 with the fresh hoop 30.

  The patch part 20 is a film-like member that does not have air permeability. The patch part 20 is a film made of polyester (more specifically, polyethylene terephthalate) having a thickness of 250 μm, for example. The patch unit 20 is processed into a circular shape. The diameter of the patch portion 20 is about ½ of the diameter of the mesh portion 10 and is ½ of the inner diameter of the shell on which the drum head 1 is stretched. The patch unit 20 has a striking surface 21 on which a performance operation (specifically, striking) is performed by the performer. The patch portion 20 is disposed so that the surface opposite to the striking surface 21 faces the outer surface of the heel in the mesh portion 10. The patch unit 20 is disposed at a position where the center of the patch unit 20 and the center of the mesh unit 10 overlap, that is, the center of the drum head 1. Since the patch part 20 is a film-like member, its rigidity is higher than that of the mesh part.

  The patch part 20 is fixed to the mesh part 10 so as to be deformed integrally with the mesh part 10. More specifically, the patch unit 20 is hot-pressed in a state where a hot melt sheet is disposed between the mesh unit 10 and the patch unit 20 and is thermally welded to the mesh unit 10. It is preferable that the entire surface of the patch unit 20 on the mesh unit 10 side is thermally welded to the mesh unit 10. In addition, the patch part 20 may be fixed to the mesh part 10 not only by heat welding but by various joining methods.

  FIG. 4 is a cross-sectional view showing a part of the cross section of the drum in which the drum head 1 is stretched on the open end 51 of the shell 50. The drum head 1 is disposed on the opening end 51 of the shell 50 with the striking surface 21 facing outward so as to close the opening surface of the shell 50. A ring-shaped hoop 60 is disposed on the fresh hoop 30 of the drum head 1 disposed on the open end 51. The hoop 60 has a portion that projects outward from the outer peripheral surface of the fresh hoop 30. A through hole 62 is provided in a portion of the hoop 60 that projects outward. A rod-shaped tuning pin 70 is inserted into the through hole 62. One end side of the tuning pin 70 is wider than the opening surface of the through hole 62 and contacts the upper surface of the hoop 60. The side surface of the tuning pin 70 on the other end side is threaded, and the other end side is combined with the screw groove of the lug 52 fixed to the outer peripheral surface of the shell 50.

  When the tuning pin 70 is rotated in the direction in which the right screw advances, the tuning pin 70 pushes down the hoop 60 and the fresh hoop 30 downward (in the direction toward the lug 52). When the fresh hoop 30 is pressed down, the mesh portion 10 is pressed against the open end 51. A force is applied to the mesh portion 10 in a direction from the center toward the outer edge. Since the patch part 20 and the mesh part 10 are heat-welded, a force is also applied to the patch part 20 in the direction from the center toward the outer edge. As a result, the mesh portion 10 and the patch portion 20 are stretched on the open end 51 of the shell 50 with a tension corresponding to the amount of rotation of the tuning pin 70.

  When the mesh portion 10 and the patch portion 20 are stretched on the opening end 51 of the shell 50, the opening surface of the opening end 51 is covered with the mesh portion 10 and the patch portion 20. In the region covered with the mesh portion 10 on the opening surface of the opening end 51, air can move inside and outside the shell 50 through the mesh gap. On the other hand, in the area covered by the patch part 20 on the opening surface of the opening end 51, the movement of the air inside and outside the shell 50 is hindered by the patch part 20. That is, the patch portion 20 is a shielding portion that prevents ventilation of a part of the opening surface of the opening end 51 when the mesh portion 20 is stretched on the opening end 51 of the shell 50.

  When a performance operation (specifically, striking) is performed on the striking surface 21 of the patch portion 20 stretched on the open end 51 of the shell 50, the patch portion 20 and the mesh portion 10 vibrate together. In the mesh part 10, since air passes in the mesh gap, the vibration of the mesh part 10 is not transmitted to the air. For this reason, even if the mesh part 10 vibrates, the sound according to the vibration does not radiate | emit much. On the other hand, since the patch part 20 is a non-breathable film like a normal drum head, the vibration of the patch part 20 is well transmitted to the air, like a normal drum head. For this reason, the patch unit 20 vibrates in the same manner as a normal drum head, and radiates sound according to the vibration.

  Since the mesh unit 10 does not radiate much sound and the patch unit 20 radiates sound according to vibration, the volume of the drum head 1 according to the present embodiment is higher than that of an ordinary film-like drum head. The volume can be reduced, and the volume can be increased compared to a drum head that is entirely made of a mesh-like material. For this reason, according to the drum head 1 of this embodiment, the volume of the drum sound when performing a performance operation is so small that it does not disturb nearby neighbors and does not dissatisfy the performer. The volume can be increased. That is, according to the drum head 1 of the present embodiment, the volume of the drum sound can be appropriately reduced.

  Further, in the drum head 1, the patch portion 20 having the striking surface 21 is a film-like member similar to a normal drum head, and when tension is applied to the mesh portion 10, similar tension is also applied to the patch portion 20. . For this reason, according to the drum head 1, the feel when the performance operation is performed on the patch unit 20 is very close to the feel when the performance operation is performed on the normal drum head. Further, since tension is also applied to the film-like patch portion 20, the vibration of the patch portion 20 due to the performance operation becomes close to the vibration in a normal drum head. For this reason, the sound quality of the drum sound with the drum head 1 stretched is close to the sound quality of the drum sound with the normal drum head stretched. That is, when performing using the drum head 1 of the present embodiment, the performer can obtain a feeling close to that of a normal drum.

  Therefore, according to the drum head 1 of the present embodiment, it is possible to obtain a sensation close to that of an acoustic drum while appropriately reducing the volume.

  The patch section 20 of the drum head 1 is provided at the center of the drum head 1 where a performer generally performs a performance operation. Therefore, the performer can perform a performance operation on the hitting surface 21 of the patch unit 20 without a sense of incongruity.

  Further, the patch portion 20 of the drum head 1 of the present embodiment is processed into a circular shape, and is thermally welded to the mesh portion 10 at the center of the drum head 1. Thus, since the patch part 20 has a concentric shape with respect to the drum head 1 and the drum head 1 has rotational symmetry in the circumferential direction, the patch part 20 has a uniform tension. It takes. Therefore, in the drum head 1, the vibration of the patch unit 20 can be made closer to the vibration of the normal drum head.

Second Embodiment
FIG. 5 is a plan view showing the configuration of a drum head 1A according to the second embodiment of the present invention. The drum head 1A of the present embodiment is different from the drum head 1 of the first embodiment in that the patch head 20A is provided instead of the patch portion 20. The patch part 20 </ b> A is different from the patch part 20 in that the diameter is smaller than that of the patch part 20. More specifically, the diameter of the patch portion 20A is about 1/3 of the diameter of the mesh portion 10, and is 1/3 of the inner diameter of the shell on which the drum head 1A is stretched.

  In the drum head 1A of the present embodiment, as in the drum head 1 of the first embodiment, the mesh portion 10 does not emit much sound, while the patch portion 20A emits sound corresponding to vibrations well. For this reason, also in this embodiment, the same effect as a 1st embodiment is acquired.

  In the drum head 1 </ b> A, the ratio of the area of the patch portion 20 </ b> A to the area of the mesh portion 10 is smaller than that of the drum head 1. For this reason, the drum sound using the drum head 1A is smaller than the drum sound using the drum head 1 and larger than the drum sound using the drum head composed entirely of a mesh material. Therefore, if the performer feels that the volume of the drum sound using the drum head 1 of the first embodiment is high, the player may perform the performance by replacing the drum head 1A of the second embodiment. Thus, the performer can perform at a more appropriate volume.

  Further, in the drum head 1A, since the area of the patch portion 20A that vibrates is smaller than that of the drum head 1 as in the case of the normal drum head, the difference in sound quality from the sound quality of the drum sound using the normal drum head is It becomes larger than the head 1. For this reason, the performer may select a drum head to be stretched on the shell in consideration of the performance environment, the volume of the drum sound, and the sound quality of the drum sound.

<Third Embodiment>
FIG. 6 is a plan view showing a configuration of a drum head 1B according to the third embodiment of the present invention. The drum head 1B of the present embodiment is different from the drum head 1 of the first embodiment in that it has a patch portion 20B instead of the patch portion 20.

  The patch portion 20B is different from the patch portion 20 in shape. More specifically, the length of the patch portion 20B in the left-right direction in FIG. 6 is longer than ½ of the diameter of the mesh portion 10, and the length of the patch portion 20B in the vertical direction in FIG. It is shorter than ½ of the diameter of the portion 10. That is, the patch part 20B has a shape in which the circular patch part 20 is flattened in the vertical direction while extending in the horizontal direction in FIG.

  In the drum head 1B of the present embodiment, as in the drum head 1 of the first embodiment, the mesh portion 10 does not emit much sound, while the patch portion 20B emits sound corresponding to vibrations well. For this reason, also in this embodiment, the same effect as a 1st embodiment is acquired.

  Also, when playing a drum with both hands, the performer usually strikes the right side of the drum head with the right hand stick and the left side of the center with the left hand stick. . In the drum head 1B of the present embodiment, the patch portion 20B spreads in the left-right direction in FIG. 6, and therefore, hitting is performed in a performance using both hands that strike the right side or the left side of the center of the patch portion 20B. Detachment from the patch unit 20B can be reduced.

<Fourth embodiment>
FIG. 7 is a cross-sectional view showing a configuration of a drum C which is an example of a drum using the drum head 1 of the first embodiment. The drum head 1 of the first embodiment is stretched on one opening end 51 of the shell 50 of the drum C, and a normal drum head 5 is stretched on the other opening end 53. In the drum C, the drum head 1 functions as a butter head, and the drum head 5 functions as a resonance head.

  When a performance operation is given to the patch unit 20 of the drum head 1 of the drum C, the vibration of the mesh unit 10 is not transmitted to the air in the shell 50 much, while the vibration of the patch unit 20 is transmitted to the air in the shell 50 well. When the air in the shell 50 vibrates due to the vibration of the patch unit 20, the resonance-side drum head 5 also vibrates in accordance with the vibration of the air. The vibration of the drum head 5 on the resonance side of the drum C is smaller than the vibration of the resonance head when a general drum head having a film shape is disposed on the butter side, and the drum is composed entirely of a mesh material. This is larger than the vibration of the resonance head when the head is placed on the butter head.

  Since the drum head 1 of the first embodiment is stretched on the drum C of the present embodiment, the same effects as those of the first embodiment can be obtained in this embodiment. Further, in the drum C of the present embodiment, the resonance side drum head 5 vibrates in accordance with the vibration of the patch unit 20, so that the sustain of the appropriate sound volume is appropriately maintained. Therefore, according to the drum C, it is possible to obtain a drum sound having a tone color closer to that of a normal drum tone as compared to a drum in which the drum head 5 is not stretched on the resonance side while appropriately reducing the volume of the drum sound. it can.

<Fifth Embodiment>
FIG. 8 is a cross-sectional view showing a configuration of a drum D which is another example of a drum using the drum head 1 of the first embodiment. The drum D is a snare drum. The drum head 1 of the first embodiment is stretched at the butter side opening end 51D of the shell 50D of the drum D, and the usual snare drum head 6 is stretched at the snare side opening end 53D. Yes. FIG. 9 is a plan view of the drum D as viewed from the drum head 6 side. The drum D is provided with a snappy (sound ray) 7 so as to come into contact with the drum head 6.

  Since the drum head 1 of the first embodiment is stretched on the drum D of the present embodiment, the same effect as that of the first embodiment can be obtained in this embodiment. Further, in the drum D of the present embodiment, the snare side drum head 6 vibrates with a moderately reduced magnitude in accordance with the vibration of the patch portion 20 of the drum head 1, similarly to the drum C of the fourth embodiment. . When the drum head 6 vibrates, the drum head 6 and the snappy 7 collide with each other to produce a snare-like sound. In the drum D, since the drum head 6 vibrates with a moderately reduced magnitude, the sound resulting from the collision between the drum head 6 and the snappy 7 is also moderately reduced. Therefore, according to the drum D, it is possible to obtain a drum sound having a timbre close to that of a normal snare drum while appropriately reducing the volume of the drum sound. The performer may perform a performance method in which the drum head 1 is muted in order to shorten the sustain of the reverberation due to the snappy 7.

<Sixth Embodiment>
FIG. 10 is a plan view showing a configuration of a drum head 1E according to the sixth embodiment of the present invention. FIG. 11 is a cross-sectional view showing a part of the cross section of the drum head 1E. The drum head 1E is different from the drum head 1 of the first embodiment in that the patch unit 20E is replaced with the patch unit 20 and the mesh unit 10E is replaced with the mesh unit 10. The patch part 20E is different from the patch part 20 in that it has a plurality of small holes 22E penetrating the front and back of the patch part 20E. The mesh portion 10E is different from the mesh portion 10 in that it has a similar small hole 12E at a position where the small hole 22E of the patch portion 20E is extended.

  The small holes 12E and 22E are formed so as to penetrate the mesh portion 10E and the patch portion 20E. The diameters of the small holes 12E and 22E are about five times the combined thickness of the mesh portion 10E and the patch portion 20E, and are, for example, 2 mm. The small holes 12E and 22E are arranged in a triangular lattice shape, and the pitch between the adjacent small holes 12E and 22E is, for example, 15 mm.

  When the mesh portion 10E and the patch portion 20E vibrate, air passes through the small holes 12E and 22E. Since the opening diameters of the small holes 12E and 22E are small, when the air passes through the small holes 12E and 22E, there is a pressure difference called a so-called orifice effect between the vicinity of the inner surface of the mesh portion 10E and the vicinity of the striking surface 21 of the patch portion 20E. Arise. Due to this pressure difference, the mesh portion 10E and the patch portion 20E are given a damping loss that prevents the vibration. As a result, the vibration of the mesh portion 10E and the patch portion 20E is attenuated faster than when the small holes 12E and 22E are not provided. Therefore, if the drum head 1E is used, it is possible to perform tone adjustment that shortens the sustain while appropriately reducing the drum sound.

  For example, the drum head 1E is used as a butter head of a snare drum. In this aspect, since the vibration of the mesh part 10E and the patch part 20E is attenuated quickly, the vibration of the snare side head is also attenuated quickly, and the sound generated by the collision between the snare side head and the snappy is also attenuated quickly. Therefore, when the drum head 1E is used as a snare drum, the sound sustain caused by the snappy can be shortened while the volume of the drum sound is appropriately reduced.

<Seventh embodiment>
FIG. 12 is a cross-sectional view showing a part of a cross section of a drum head 1F according to a seventh embodiment of the present invention. The drum head 1F is different from the drum head 1 of the first embodiment in that it has a patch portion 20F instead of the patch portion 20. The patch portion 20F is different from the patch portion 20 in that the patch portion 20F is thermally welded to the mesh portion 10 on the inner side surface side of the ridge in the mesh portion 10. Also in this embodiment, the same effect as the first embodiment can be obtained.

<Other embodiments>
As mentioned above, although each embodiment of this invention was described, other embodiment can be considered to this invention. For example:

(1) In the drum head 1 of the first embodiment, the diameter of the patch portion 20 is about ½ of the diameter of the mesh portion 10, and in the drum head 1A of the second embodiment, the diameter of the patch portion 20A is the mesh portion. It was about 1/3 of the 10 diameter. However, the diameter of the patch part with respect to the diameter of the mesh part is not limited to these modes. In addition, the shape of the patch portions 20 and 20A in the first and second embodiments is a circle, and the shape of the patch portion 20B in the third embodiment is a flat circle. However, the shape of the patch portion is not limited to these shapes. For example, the patch portion may have a ring shape. Moreover, the patch parts 20-20B of 1st-3rd embodiment were arrange | positioned in the position where the center of the patch parts 20-20B and the center of the mesh part 10 overlap. However, the patch part may be arranged such that the center of the patch part is eccentric from the center of the mesh part 10. Further, the patch portions 20 to 20 </ b> B of the first to third embodiments are arranged in a region including the center of the mesh portion 10. However, the patch part may be arranged so as not to include the center of the mesh part 10. For example, the patch portion may be arranged eccentrically so that the center of the mesh portion 10 is located outside the outer periphery of the patch portion, or may be configured in a ring shape, and the center of the mesh portion 10 in the inner region of the ring May be arranged so as to be positioned. That is, it is sufficient that the area of the patch portion is smaller than the area of the opening surface of the opening end of the shell on which the mesh portion is stretched. If the area of the patch portion is smaller than the area of the opening surface, the air inside and outside the shell passes through the mesh portion, while the passage of air inside and outside the shell is hindered by the patch portion.

(2) In the drum head 1 of the first embodiment, the entire surface of the patch portion 20 that faces the mesh portion 10 is fixed to the mesh portion 10. However, the patch unit 20 may be fixed to the mesh unit 10 at a part of the surface facing the mesh unit 10. In this case, it is preferable that the patch part 20 has at least the periphery of the patch part 20 fixed to the mesh part 10. This is because the tension applied from the peripheral edge of the patch portion 20 toward the outer edge of the mesh portion is uniform in the circumferential direction of the patch portion 20. The mesh portion may be processed into a ring shape having an inner diameter smaller than the diameter of the patch portion. In this aspect, the patch part should just be arrange | positioned so that the inner side area | region of the ring of a mesh part may be plugged up, and may be fixed to the mesh part. Further, in this aspect, the air inside and outside the shell can be moved through the small hole provided in the patch portion and the inner region of the ring of the mesh portion. Therefore, the orifice effect can be generated only by providing the small hole in the patch portion. it can.

(3) The patch portion 20 of the drum head 1 of the first embodiment is a film-like member fixed to the mesh portion 10, and the opening end 51 is formed when the mesh portion 10 is stretched on the opening end 51 of the shell 50. This is a member that prevents ventilation of a part of the area of the opening surface. You may implement | achieve the function implement | achieved by this film-like patch part in aspects other than a film-like patch part. For example, resin (for example, thermosetting resin) may be impregnated and cured (for example, thermosetting) in a region smaller than the opening surface of the shell in the mesh portion. By such processing, the mesh gap can be filled. That is, in the drum head of this example, a mesh gap in a region covering a part of the opening surface of the opening end of the shell in the mesh portion is filled with a cured resin (for example, a thermosetting resin). good. In this embodiment, the cured resin is fixed to the mesh, and the cured resin hinders ventilation through the mesh gap. For this reason, the effect similar to 1st Embodiment is acquired also in this aspect. However, the feel when performing a performance operation on a film-like patch portion is better than the feel when performing a performance operation on a drum head having a mesh gap filled with a thermosetting resin. Therefore, a mode in which a film-like patch part is fixed to a mesh part is more preferable.

(4) In the drum C of the fourth embodiment, the drum head 1 of the first embodiment is stretched on the butter side, and the normal drum head 5 is stretched on the resonance side. However, the combination of the drum heads stretched around the shell 50 is not limited to this. For example, the drum head 1A of the second embodiment may be stretched on the butter side, and the normal drum head 5 may be stretched on the resonance side. The same applies to the drum D of the fifth embodiment. The performer can freely select the drum head on the shell according to the playing environment and preference.

(5) You may combine the technical feature of each said embodiment and each modification suitably.

  1, 1A, 1B, 1E, 1F ... drum head, 10, 10E ... mesh portion, 20, 20A, 20B, 20E, 20F ... patch portion, 21 ... striking surface, 12E, 22E ... small hole, 30 ... fresh hoop, 50 , 50D ... shell, 51, 51D, 53D ... open end, 52 ... lug, 60 ... hoop, 62 ... through hole, 70 ... tuning pin.

Claims (5)

A mesh part with an outer edge fixed to a fresh hoop;
A film-like patch portion that is fixed to the mesh portion and prevents ventilation of a part of the mesh portion;
A drum head comprising:   The drum head according to claim 1, wherein the patch portion is disposed in a region including a center of the mesh portion.   The drum head according to claim 1, wherein at least a peripheral edge of the patch portion is fixed to the mesh portion.   The drum head according to any one of claims 1 to 3, wherein a small hole penetrating the front and back of the patch portion is provided. Has a mesh part with an outer edge fixed to a fresh hoop,
A drum head, wherein a gap of a mesh in a region covering a part of an opening surface of an opening end of a shell on which the mesh portion is stretched is filled with a cured resin.

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