JP2009294368A - Japanese drum - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a Japanese drum, strengthening press-bonding of a beating surface leather of the Japanese drum to the end face of a barrel to secure uniform tension of the whole beating surface part, and further preventing the occurrence of cracks from an insert hole and a seam of the beating surface leather. <P>SOLUTION: In this Japanese drum 1, the beating surface leather 3 is adhered from the outer periphery of the end face 21 of the barrel 2 to the upside of a large-diameter leather adhering ring 7 and adhered over the leather adhering ring 7 by sewing 8 its periphery to a folded-back end part 31 along the leather adhering ring 7, and press-bonded to both end faces 21 of the barrel 2. A pressure ring 4 is installed on the beating surface leather 3 between the outer periphery of the end face of the barrel 2 and the leather adhering ring 7, and the beating surface leather 3 is adhered by pressing it through the pressure ring 4 by a pressing means. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a Japanese drum in which tapping leather is bonded to both end faces of the drum drum, and more specifically, this type of Japanese drum has a strong pressure bonding to the drum of the tapping leather to improve sound quality. It is about Japanese drums.

In traditional Japanese drums, traditional leather that has been applied to both sides of the drum and torso is used as a traditional means of bringing tension to the surface by means of the tapping leather being crimped to both ends of the drum drum. It is composed of a rope that is crimped and fixed to the trunk.
That is, the striking leather is stretched on a metal leather tension ring, the leather tension ring has a diameter that is much larger than the outer diameter of the trunk, and the striking leather is placed on the leather tension ring, The periphery is folded along the leather ring, and the folded end portion and the surface of the hitting leather are sewn together with a kite thread or the like.
Rope insertion holes are then formed at appropriate intervals along the inner diameter of the leather ring, and the striking leather constructed in this way is applied to both end faces of the torso, and the rope is pulled to the leather striking links of both striking leathers. While hanging, it passes alternately between the insertion holes and passes along the barrel, and the rope is fastened to press the striking leather against the barrel.

Furthermore, by winding the tip part of the rope along the circumference of the trunk from the outside of the rope passing between the striking leathers at the center of the trunk, the striking leather is further crimped to the end face of the trunk. It can bring tension to the leather.
In this way, the striking leather attached to the torso is affected by the tightness of the rope, and at the same time, the tone struck by the bee is different, changing the tightening of the rope end to the strength By setting, the target tone color can be easily obtained.

Instead of the rope, hook-type bolts A are hooked into the insertion holes C of the leather tension ring B and the hitting leather H, and are inserted into the communication holes F provided in the flat ring E that is loosely fitted to the trunk D, and the nuts G In some cases, it is fastened to the flat ring E (FIG. 7).
Further, a pair of striking leathers are arranged on both end faces of the body part, and a plurality of turnbuckles as tension means are connected to the striking leather straps and pulled so as to attract each other. It is supposed to bring tension to leather (Japanese Patent Laid-Open No. 2006-030235).
JP 2006-030235 A JP 2006-113225 A JP2002-149154

The means of tightening using the insertion hole with the above rope has a limit in tensioning the hitting leather because it is tightened by human power, and it is not possible to expect extreme tension.
Moreover, since a rope is pulled through the insertion hole of the hitting leather, a crack from the insertion hole may occur.
Furthermore, since the striking leather is strongly pulled and tensioned, the striking leather is placed on the leathering ring, the periphery is folded along the leathering ring, and the folded end and the surface of the striking leather are connected. Circumferential parts sewn with silk thread etc. are dotted with through holes for seams and are weaker to pull than other circumferential parts, and cracks occur in the circumferential parts where the seams are located due to aging fatigue, etc. .

On the other hand, those using hook-type bolts and turnbuckles can increase the degree of tension compared to human power, but the same applies to the occurrence of cracks in the leather.
And since it pulls the leather tension ring which is the end of the striking leather, the peripheral edge part other than the striking face part (in the end face of the trunk) also stretches and tensions at the same time, so the bolt tightening distance becomes long It takes time to tighten.

In addition, there is a distance from the end surface of the trunk to the leather tension ring, and the leather tension ring is pulled at an interval, so it is difficult to ensure uniform tension throughout the striking surface. It is.
Further, in FIG. 7, the relationship between the hook-type bolt and the insertion hole of the flat ring is that the head of the hook-type bolt may become familiar with the striking leather at the start of tightening and cannot be tightened perpendicularly to the striking surface. The hook-type bolt and nut may be damaged, and the head of the hook-type bolt may become idle without being adjusted to the hitting leather and the hitting leather may be damaged.

  Therefore, in order to solve the above-mentioned problem, the present invention increases the pressure bonding to the end surface of the drum of the drum surface of the Japanese drum, ensures uniform tension over the entire surface of the striking surface, It is intended to provide a Japanese drum that prevents the occurrence of cracks from the seam.

  The Japanese drum according to claim 1 of the present invention is stretched on a leather ring having a diameter larger than the outer periphery of the end surface of the trunk, and an end portion folded around the leather ring is sewn to form a leather ring. In a Japanese drum where the striking face leather is crimped to both end faces of the torso, a pressure ring is placed on the striking face leather between the outer periphery of the end face of the torso and the leather tension ring. It is characterized in that the striking leather is pressed and tensioned.

  According to a second aspect of the present invention, in the first aspect, the crimping position of the end portion that is folded back along the striking leather strap is defined as the outer side of the pressure ring.

  The invention of claim 3 is the bolt hole provided in the pressure ring installed in the hitting leather on both end faces of the trunk in different positions, and the hitting leather continuous to the bolt hole. A pressing bolt is inserted into a communication hole provided at a position corresponding to the bolt hole of the flat ring that is loosely fitted to the hollow, and the pressure ring and the flat ring are fastened with a nut. It is characterized by being a pressing means.

  The invention according to claim 4 is the invention according to claim 1 or 2, wherein a bolt hole provided at a position facing each pressure ring provided on the striking leather on both end faces of the body, and a striking leather continuous with the bolt hole. The opposing pressing bolts inserted through the continuous holes formed in the space are connected by turnbuckles, and the pressure rings on both end surfaces are fastened to form pressing means.

  A fifth aspect of the invention is characterized in that, in the third or fourth aspect, the protruding piece provided on the outer peripheral side of the pressure ring has a bolt hole. The ring has a connecting portion for connecting both rings, and a bolt hole is provided in the connecting portion.

  The invention of claim 7 is characterized in that, in claim 6, the end portion of the strap that is folded back along the striking leather strap is located between the inner and outer double rings. The invention according to claim 8 is characterized in that, in any one of claims 1 to 7, the pressure ring has a leather ring pressing portion, and the invention in claim 9 is characterized in that in any one of claims 1 to 8. The leather ring is formed of a cylindrical body.

According to the present invention, the pressure ring is installed inside the leather tension ring, and the striking leather in the short diameter range is intensively stretched and tensioned as compared with the conventional stretching range. The stretching distance to be brought about may be short, and the effect of bringing the tension of the hitting leather in a shorter time than before is exhibited.
In addition, the pressure ring is installed directly on the striking leather, surrounds the entire perimeter of the striking surface (in the end surface of the body), and pressurizes and stretches, so that the effect of maintaining uniform tension on the striking surface is obtained. It is done.
And the effect which brings about the tension | tensile_strength of a striking leather more efficiently is demonstrated by making a pressurization ring approach as close as possible to a trunk | drum edge part.

  In the invention of claim 2, in addition to the above-described effect, the attachment position of the end portion folded back along the striking leather strap is set to the outside of the pressure ring. It is not directly affected by the tension of the hitting leather, and it has the effect of avoiding the occurrence of cracks from the butt.

According to the invention of claim 3, in addition to the effects of claims 1 and 2, since the pressure ring is tightened with a bolt, the tension of the leather on the drumming surface can be obtained more easily and reliably than the rope hook.
And since the continuous hole formed in the hitting leather is not used as a hooking hole for pulling and stretching the leather, there is no possibility of cracking in the hitting leather from the continuous hole, and the conventional problem is solved. Has an effect.
Furthermore, the relationship between the pressure ring and the flat ring is tightened perpendicular to the drum striking surface from the start to the end of tightening of the striking leather, so that there is no misalignment and there is no risk of damage to the bolts and nuts.

  According to the invention of claim 4, since the pressing bolt is connected by the turnbuckle and the pressure rings on both end faces are fastened, the effect of easily and quickly performing the tensioning operation of the striking leather is exhibited.

In addition to the effect of the invention of claim 3 or 4, the invention of claim 5 has a bolt hole in the projecting piece provided on the outer peripheral side of the pressure ring, and therefore is connected to the pressure ring that presses the striking leather. There is no interference between the holes, and there is an effect of more reliably preventing cracks from the continuous holes in the hitting leather.
Further, the pressure ring installed between the outer periphery of the end surface of the trunk and the leather tension ring also has an effect of being installed close to the trunk end side naturally.

  In addition to the effect of the invention of claim 3 or 4, the invention of claim 6 has the effect that the pressing force is more surely strong because the pressure ring is formed by an inner and outer double ring, Since the bolt hole is provided in the connecting part of both rings, the striking leather of the part of the continuous hole is fixed and is not affected by the pressing action of the pressure ring, so the occurrence of cracks from the continuous hole can be completely prevented. Demonstrate the effect.

  In the invention of claim 7, in addition to the effect of the invention of claim 6, since the end portion of the strap folded back along the striking leather strap is located between the inner and outer double rings. In addition, since the striking leather of the butt portion is fixed and is not affected by the pressing action of the pressure ring, the effect of completely preventing the occurrence of through-hole cracks for the seam is exhibited.

  In the invention of claim 8, in addition to the effects of the inventions of the above-mentioned claims, since the pressure ring has a leather ring pressing portion, the leather portion between the pressure ring and the leather ring is fixed. The pressing action of the pressure ring reaches only the striking leather in the pressure ring and exerts an effect of stretching and tensioning.

  In addition to the effects of the inventions of the above-mentioned claims, the invention of claim 9 is lighter than a conventional leather ring and facilitates handling of the drum because the leather ring is formed of a cylindrical body. The effect is obtained, and it is not necessary to pull the leather ring directly, and the strength restriction is relaxed.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of a Japanese drum 1 showing an embodiment of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a front elevational view of the same portion.
The Japanese drum 1 includes a drum 2, a striking leather 3 and 3 that are attached to the upper and lower end surfaces 21 of the drum 2, a pressure ring 4 that presses and fixes the striking leather 3 and 3 to the end surface of the drum 2, and pressing means. The pressing means includes a pressing bolt 51, a nut 52, and a flat ring 6.

For example, the trunk 2 is formed in a drum shape by cutting the trunk of the bag into a ring and hollowing out the inside.
The striking leather 3 is stretched on a leather ring 7, and the leather ring 7 has a diameter that is much larger than the outer diameter of the trunk 2, and the striking leather 3 is placed on the leather ring 7. The periphery is folded along the leather ring 7, and the folded end portion 31 and the surface are sewn 8.
The ring 7 for leather tension is formed by forming a metal pipe into a ring shape, and the thread to be worn by the saddle is conventionally a thread, and the position of the sewing 8 is located outside the pressure ring 4 to be worn. 4 is done.

The pressure ring 4 is configured such that the striking leather 3 attached to the leather tension ring 7 is brought into contact with the upper and lower end faces 21 of the body 2 and the outer side of the end face 21 (of course, the leather tension ring 7 It is installed on the inner surface of the striking leather 3.
The pressure ring 4 is provided with protruding pieces 41 on the outer peripheral side at regular intervals, each protruding piece 41 has a bolt hole 42, and the hitting leather 3 continuous to the bolt hole 42 has a continuous hole 32. Is open.
The bolt holes 42 and the connection holes 32 may be positioned so that the connection holes 32 do not overlap the attachment 8, or the attachment 8 may be bypassed.

On the other hand, a flat ring 6 is horizontally fitted in the center of the body 2, and a communication hole 61 is formed at a position corresponding to the bolt hole 42 of the flat ring 6.
Therefore, the bolt hole 42 of the protruding piece 41 provided in the pressure ring 4 installed in the hitting leather 3 and the continuous hole opened in the hitting leather 3 continuous with the bolt hole 42 are positioned on the straight line. 32, and the presser bolt 51 is inserted into the communication hole 61 of the flat ring 6 loosely fitted to the body 2, and the pressurizing ring 4 and the flat ring 6 are fastened by the nut 52 so that the pressurizing ring 4 The striking leather 3 within the diameter range is stretched and tensioned.

The flat ring 6 is equally fastened by the pressurizing rings 4 and 4 of the striking leather 3 and 3 that are abutted against the upper and lower end surfaces 21 of the loosely-fitted body 2, and the pressing bolts 51 and nuts 52. Therefore, a pulling force acts on each pressure ring 4 and 4.
Of course, the communication holes 61 corresponding to the pressing bolts 51 from above and below are arranged so as not to interfere.
Moreover, in FIG. 1 thru | or FIG. 3, the protrusion piece 41 provided in the pressurization ring 4 has the front part extended | stretched, and has become the ring press part 43 for leather tension.

  FIG. 4 is a cross-sectional view of an essential part showing another embodiment, and is provided at a position facing each pressure ring 4, 4 installed on the striking leather 3, 3 on both end faces 21, 21 of the body 2. The pressing bolts 51 and 51 inserted into the bolt holes 42 and the connecting holes 61 formed in the striking leathers 3 and 3 continuous with the bolt holes 42 are connected by the turnbuckle 53 and the end faces 21 and 21 are connected to each other. The pressurizing rings 4 and 4 are fastened to form pressing means.

5 and 6 are plan views showing other embodiments, which are formed by a double ring in which an auxiliary ring 9 having a long diameter is provided on the outside of the pressure ring 4, and a protruding piece 41 is provided. Are connected together.
The diameter of the auxiliary ring 9 is shorter than that of the leather ring 7 so that the pressure ring 4 and the auxiliary ring 9 can be installed on the striking leather between the end face 21 of the body 2 and the leather ring 7. It is.

1 to 3, the bolt hole 42 is provided in each of the plurality of projecting pieces 41 of the pressure ring 4, but the projecting pieces extending over the entire periphery are extended, Alternatively, the pressure ring may have a plate shape with rounded corners, and a bolt hole may be provided in the pressure ring itself.
Also in FIG. 4, a protruding piece of a flat plate ring may be interposed between the pressure ring 4 and the auxiliary ring 9 around the entire periphery.

It is a top view which shows one embodiment of this invention. It is a front view of FIG. FIG. 2 is a partially longitudinal front view of FIG. 1. It is a partially longitudinal front view which shows other embodiment of this invention. It is a top view which shows other embodiment of this invention. FIG. 6 is a partially longitudinal front view of FIG. 5. It is a partially longitudinal front view of a conventional example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Japanese drum 2 Body 21 End surface 3 Batted leather 31 Folded end 32 Continuous hole 4 Pressure ring 41 Projection piece 42 Bolt hole 43 Leather tension ring pressing part 51 Pressing bolt 52 Nut 53 Turnbuckle 6 Flat ring 61 Communication hole 7 Ring for leather tension 8 Attaching 9 Auxiliary ring

Claims (9)

  The upper surface of the torso is stretched onto a leather ring that has a larger diameter than the outer periphery of the torso. In a Japanese drum that has been crimped to both end faces, a pressure ring is placed on the striking leather between the outer circumference of the torso and the leather tension ring, and the striking leather is pressed and tensioned by the pressure ring with the pressing means. Japanese drums characterized by   2. The Japanese drum according to claim 1, wherein a position where the end portion folded back along the leather-covered ring of the hitting leather is located outside the pressure ring.   Bolt holes provided in different positions on the pressure rings installed on the striking leather on both end faces of the trunk, continuous holes in the striking leather continuous with the bolt holes, and flat plates loosely fitted on the trunk 3. The pressing hole is inserted into a communication hole provided at a position corresponding to the bolt hole of the ring, and the pressure ring and the flat ring are fastened with a nut to form a pressing means. Japanese drums.   Bolt holes provided at positions facing each pressure ring installed on the striking leather on both end faces of the trunk, and opposing pressings inserted through the continuous holes formed in the striking leather continuous with the bolt holes The Japanese drum according to claim 1 or 2, wherein the bolts are connected by a turnbuckle, and pressure rings on both end faces are fastened to form a pressing means.   The Japanese drum according to claim 3 or 4, wherein the protruding piece provided on the outer peripheral side of the pressure ring has a bolt hole.   The Japanese drum according to claim 3 or 4, wherein the pressure ring is formed by an inner and outer double ring, has a connecting portion for connecting both rings, and is provided with a bolt hole in the connecting portion.   The Japanese drum according to claim 6, wherein the end portion of the buckled leather is folded along the leather ring and located between the inner and outer double rings.   The Japanese drum according to any one of claims 1 to 7, wherein the pressure ring has a leather ring pressing portion.   The Japanese drum according to any one of claims 1 to 8, wherein the leather ring is formed of a cylindrical body.

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