JP3046729U - Drum - Google Patents

Abstract

(57) [Summary] [Problem] To obtain a sound similar to that of a wooden body even when the singing mouth is hit with a bowl with a repellent because the contact surface between the singing mouth and the skin is small and the singing mouth can be hit with a bowl. To provide a drum that can be made without cracks. SOLUTION: A torso 2 made of a synthetic resin, an annular hard-wooden mouth portion 4 fixed to both ends of the torso 2 and having a grain 3 in a girth direction, and a leather stuck to the hard-woode mouth portion 4 Taiko 1 consisting of five.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a drum, a kind of Japanese musical instrument, and more particularly, to a drum in which the mouth portion of a drum whose body is made of synthetic resin is formed of an annular hardwood, and a bark is stuck to the annular hardwood. is there.

[0002]

[Prior art]

 As is well known, the body of a drum, a type of Japanese musical instrument, is originally made of solid wood, but in recent years, it has been synthesized in order to save the labor of hollowing out logs into a tube and to manufacture the body easily and inexpensively. A drum with a resin trunk is also widely used.

Japanese Utility Model Publication No. Sho 58-7429 discloses a drum drum in which an annular tree is embedded at both ends of a synthetic resin drum.

[0004]

[Problems to be solved by the invention]

 Generally, if the singing mouth (both end faces of the drum: indicated by reference numeral 9 in FIG. 2) in contact with the drum skin is made of wood and the contact surface with the skin is reduced, the sound of the drum can be resonated. Although it is said to be better, in a drum with the above-mentioned all-wood trunk, the wood grain runs vertically with respect to the waist, so if the width of the singing mouth is narrowed, cracks are likely to occur along the wood grain, There was a problem that once a crack was formed, the torso would split in half from the crack.

[0005] Furthermore, in the case of a drum having a body made of synthetic resin, there is a problem that when the drum is molded with a soft synthetic resin, the tack is loosened while the drum is used. If it is molded in advance, it cannot be driven directly because the body is hard.Therefore, it is necessary to make a hole after drilling a temporary hole in advance. In addition, there is a problem that extra work is required, that is, it is necessary to open the stud after measuring the position where the stud is driven. Further, there is a problem in that when the singing mouth is hit with a repellent to make a sound, the singing mouth is made of a synthetic resin, so that the skin is easily torn and the sound generated is not sound good.

The drum disclosed in the above-mentioned publication has a ring-shaped tree embedded at both ends of a synthetic resin trunk, so that both ends of the trunk become thick, and the contact between the skin and the singing mouth is increased. In addition to the problem that the surface area cannot be reduced, there is also the problem of producing a sound by hitting the singing mouth of a drum with a repellent because the singing mouth is made of synthetic resin.

[0007] Therefore, the present inventor has proposed that even if the drum drum is made of synthetic resin, the contact surface between the singing mouth and the skin can be reduced and the rivet can be easily driven. A sound similar to that of a wooden torso can be obtained even when struck with a repellent, and there are no cracks. Achieved the technical issue by obtaining the remarkable knowledge that the vicinity of both ends of the torso (hereinafter referred to as “song mouth”) should be formed of hardwood with wood grain running in the same direction as the drum circumference. It was done.

[0008]

[Means for Solving the Problems]

 The technical problem can be solved by the present invention as follows. That is, the drum according to the present invention is formed of a synthetic resin body, an annular hard wooden mouth that is fixed to both ends of the body and has a grain in the body direction, and is driven by the hard wooden mouth. It consists of skin.

In the present invention, the drum and the ring-shaped hardwood singing portion of the drum are fixed by bonding or screwing.

[0010] In addition, in the present invention, in the above-mentioned drum, an annular hardwood singing portion is formed by bonding a plurality of hardwood pieces such that the grain is aligned in a waist direction.

[0011] Further, in the present invention, in the above-mentioned drum, an annular hardwood singing portion is formed by joining a plurality of hardwood pieces to align a grain in a waist direction in plural stages.

Further, in the present invention, in any of the above-mentioned drums, the trunk is made of fiber-reinforced plastic.

Further, in the present invention, in any of the above-mentioned drums, the hardwood at the ring-shaped hardwood singing portion is squeezed.

[0014]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment 1

FIG. 1 is a perspective view of the drum according to the present invention, FIG. 2 is a vertical sectional view taken along the line AA of the drum shown in FIG. 1, and FIG. 3 explains a method of mounting the singing mouth of the drum shown in FIG. FIGS. 4A and 4B are longitudinal sectional views of the singing portion and the trunk shown in FIG. 3. In these figures, reference numeral 1 denotes a synthetic resin barrel-shaped trunk 2 and both ends of the trunk 2. An annular hard wooden mouthpiece portion (hereinafter, also simply referred to as a “song mouth portion”) 4 having a grain 3 (see FIG. 3) fixed in the waist direction and a skin 5 stuck to the mouth portion 4. It is a taiko drum, and the studs 6 are regularly driven alternately up and down.

A flange 7 for fixing the mouth opening 4 is formed at both ends of the body 2 toward the inside of the body 2. At both ends of the portion 2, a joining surface 7a (see FIG. 3) for fixing the singing portion 4 is provided.

The singing portion 4 is formed by laminating six hardwood pieces 8 in an annular shape, and further laminating the hardwood pieces 8 in two steps so that the joining surfaces of the hardwood pieces 8 do not overlap. It runs in the same direction as the circumferential direction of the circular song opening 4. The outer wall of the mouth 4 is formed with a gentle curve toward the center of the mouth 4, and the inner wall of the mouth 4 is formed in a mortar shape from the upper part to almost half. From the bottom to the bottom is cylindrical. A narrow mouth 9 is formed on the upper surface of the mouth 4 and a joint surface 4a for fixing to the joint surface 7a of the body 2 is formed on the lower surface.

In the present embodiment, since the singing mouth 4 forming both ends of the body 2 is made of hardwood, it is more breathable than a drum having a body made entirely of a synthetic resin, and the sound is lost. Get better . Further, since the grain 3 of the mouth 4 runs in the same direction as the waist direction of the trunk 2, the strength of the mouth 4 can be obtained. Furthermore, since the mouthpiece 4 is bonded in two steps so that the joining surfaces of the hardwood pieces 8 do not overlap, a stronger strength is obtained, and even if the mouthpiece is damaged, only the damaged hardwood piece 8 is replaced. No problem.

The body 7 may be made of fiber-reinforced plastic, and the hardwood pieces 8 may be made of hardwood such as zelkova, bupinga, oak or oak.

An adhesive may be used for joining the hardwood pieces 8. Further, the mouth opening 4 and the body 2 can be fixed with an adhesive, but it is more preferable to fix them with nails 10 or screws.

Embodiment 2

FIG. 5 is a partial longitudinal sectional view showing a joining state between the singing portion and the trunk portion. In FIG. 5, the same reference numerals as those in FIGS. This is a modification of the first embodiment, in which the flange 7 of the body 2 is formed with a cylindrical screw portion 11 having a thread cut on the outer periphery, and the flange 7 is formed on the cylindrical inner wall of the mouth opening portion 4. A screw groove 4b corresponding to the screw portion 11 is formed.

In the present embodiment, the singing portion 4 is screwed to the body portion 2 to join the singing portion and the body portion. The joining surface 7a of the flange 7 and the joining surface 4a of the mouth opening 4 may be bonded together.

Embodiment 3

FIG. 6 is a partial longitudinal sectional view showing a joint state between the singing portion and the trunk portion. In FIG. 6, the same reference numerals as those in FIGS. A fixing piece 13 having a screw hole 12 is provided at equal intervals on the flange 7 of the body 2, and a screw 15 passed through the mouth opening 4 is fixed to the fixing piece 14. The mouth portion 4 and the body portion 2 are fixed by screwing into the screw holes 13, and the joining surface 7a of the flange portion 7 and the joining surface 4a of the mouth portion 4 are adhered.

[0027]

【Example】

 The barrel-shaped body 2 having a height of 57 cm, a central outer diameter of 57 cm and a thickness of slightly more than 1 cm having a flange 7a having an outer diameter of 45 cm, an inner diameter of 42 cm, and a thickness of 1 cm was formed at both ends of the fiber reinforced plastic (see FIG. 3). .

The length of the outer circumferential arc is a length obtained by dividing the outer circumference of the flange portion 7a into six equal parts, the length of the inner circumferential arc is a length obtained by dividing the inner circumference of the flange portion 7a by six, the thickness is 3.5 cm, and the height is 3.5 cm. Twelve pieces of zelkova hardwood 8 running 4 cm in grain length 3 in the longitudinal direction were formed. Six hardwood pieces 8 are arranged in a ring, and each hardwood piece 8 is adhered with an epoxy resin adhesive (manufactured by ThreeBond Co., Ltd .: hardener 2 with respect to main agent 1). The two pieces were stacked in such a manner that they did not overlap, and they were adhered with the epoxy resin adhesive to obtain a cylindrical mouthpiece portion before processing.

The cylindrical mouthpiece is processed as shown in FIG. 3, and the outer wall is formed into a gentle curve toward the center of the mouthpiece 4, and the inner wall is formed in a mortar shape from the upper part to almost half. A mouthpiece 4 having a mouthpiece 9 having a width of about 1 cm was formed in a cylindrical shape from substantially half to the lower part.

The joining surface 7a of the flange 7 of the barrel-shaped body 2 and the joining surface 4a of the mouthpiece 4 are bonded with the epoxy resin-based adhesive, and nails 10 are driven into the barrel at equal intervals. The mold body 2 and the singing mouth 4 were tightly fixed.

[0031]

[Effect of the invention]

 As described above, according to the present invention, the singing mouth, which is both ends of the drum drum, is formed of hardwood whose grain runs in the waist direction. The contact surface can be made small, and even if the singing mouth is hit with a repellent, there is no crack as in a drum with a full wooden body, and the singing mouth is made of wood, as in the case of synthetic resin. There is no need to worry about breaking the skin, and the sound generated is good. In addition, since the bark is in contact with hardwood, it can produce a sound similar to a drum with a full wooden torso. Also, since the studs are made of hardwood, it is possible to replace the skin as easily as a drum with an all-wood trunk, even though it is a drum with a synthetic resin trunk.

Further, since the drum is constituted by the body, the mouthpiece, and the skin, even if the drum is consumed by use, it is only necessary to replace the mouthpiece.

Therefore, it can be said that the industrial applicability of the present invention is very high.

[Brief description of the drawings]

FIG. 1 is a perspective view of a drum according to the present invention.

FIG. 2 is a vertical sectional view taken along line AA of the drum shown in FIG.

FIG. 3 is a view for explaining a method of attaching the singing mouth of the drum shown in FIG. 1;

FIG. 4 is an explanatory diagram in which a singing opening and a trunk shown in FIG.

FIG. 5 is a partial vertical cross-sectional view showing a joined state of a singing mouth portion and a trunk portion.

FIG. 6 is a partial vertical cross-sectional view showing a joined state of a singing mouth portion and a trunk portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drum 2 Body 3 Wood grain 4 Singing mouth 5 Skin 6 Rivets 7 Flange 8 Hardwood piece 9 Singing mouth

Claims (7)

[Utility model registration claims] The present invention comprises a synthetic resin trunk, an annular hardwood mouthpiece having a grain in a waist direction fixed to both ends of the body part, and a leather stuck to the hardwood mouthpiece. Taiko which is the feature. 2. The drum according to claim 1, wherein the trunk portion and the ring-shaped hardwood singing portion are bonded to each other. 3. The drum according to claim 1, wherein the trunk and the ring-shaped hardwood singing portion are screwed. 4. The drum according to any one of claims 1 to 3, wherein the ring-shaped hardwood singing portion is made of a plurality of hardwood pieces, and the grain thereof is aligned in the waist direction. 5. The drum according to claim 4, wherein the ring-shaped hardwood singing portion is made of a plurality of hardwood pieces, and the grain is aligned in a waist direction in a plurality of stages. 6. The drum according to claim 1, wherein the body is made of fiber reinforced plastic. 7. The drum according to claim 1, wherein the hardwood of the ring-shaped hardwood singing portion is zelkova.