JPH10198346A - Drum - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the necessity of a latch so as to reduce the number of components, and to enable a rim to naturally oscillate so as to generate primitive sounds. SOLUTION: A ring-like rim 16 has a rectangular cross-sectional shape and made of a wood material such as polywood, and a plurality of bolt holding parts 17 for holding fastening bolts 9 are formed in the rim 16 at circumfrentialy equal intervals. Each of the bolt holding parts 17 is composed a recess 17A which is opened at a surface 19 on a side remote from a lug 8, and the head part 9a of the bolt 9 is accommodated in the recess 17A which has a depth by which the head part 9a does not project. The bolt holding part 17 has a bolt insertion hole 18 communicated with the recess 17, and the above-mentioned fastening bolt 9 is inserted in the hole 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to drums such as bass drums, snare drums, tom toms (drums), floor drums, marching drums, and more particularly to drums using wooden rims.

[0002]

2. Description of the Related Art Bass drum, snare drum, tom tom,
A drum such as a marching drum includes a body 1 made of wood, fiber reinforced synthetic resin (FRP), metal or the like in a cylindrical shape as shown in FIGS. 4 and 5. A drum head 2 (2a, 2b) made of natural leather or a synthetic resin film (eg, polyester resin, polycarbonate resin, etc.) is supported and tensioned by a plurality of head supporting and tensioning means 3 with uniform tension. A drum sound is generated by using an air column sealed between 2a and 2b as a vibration transmission medium. That is, for example, when the front drumhead 2a is hit with the stick 4, the air column transmits the vibration to the back drumhead 2b, thereby the back drumhead 2b.
b causes vibration, the air column transmits the vibration to the front drum head 2a.
It is configured to cause a and b to vibrate repeatedly. For this reason, the trunk body 1 is required to maintain a stable shape, not to be deformed by climatic conditions, tension of the drum head 2 and the like, to have little disturbance of articulation, not to cause self-vibration or self-absorption, and the like.

[0003] The head supporting and tensioning means 3 generally holds the peripheral edge of the drum head 2 and is fitted around the outer periphery of the opening end of the body 1, and is fitted around the periphery of the body 1 as well. An annular fastening frame (hereinafter, referred to as a rim) 6 that is mounted and presses the head frame 5, and a latch 7 that is hooked on the rim 6
A latch 7 and a lug 8 fixed to the outer peripheral surface of the body 1
When the rim 6 is moved in the axial direction by rotating the tightening bolt 9, the pressing force of the rim 6 against the head frame 5 changes. Tension, in other words, the tone of the drum.

[0004]

As described above, in the conventional drum using the wooden rim 6, the claw 7 of the latch 7
The hook a was hooked on the edge of the rim 6 on the side opposite to the trunk body 1, and the lug 8 and the hook 7 were connected by inserting a tightening bolt 9 through the hook 7. However, the rim 6 is
There is a problem that holding down the rim suppresses the vibration of the rim itself. Also, since the vibration sound of the metal latch 7 is a high and sharp vibration sound unlike the wooden rim 6, there is no problem in the case of a snare drum that suppresses a metallic high-pitched sound. With the tom tom that has a natural sound, the original sound of the rim is canceled, and the characteristics of using a wooden material are diminished. Furthermore, as a stick playing method, stick 4
At the same time, the head surface is hit with the tip 4a of the rim, and at the same time, the rim 6
Or while holding the intermediate portion of the stick 4 by hand while the tip of the tick is pressed and fixed to the head surface, and hitting the gripping side end of the stick 4 to the rim 6 (such a playing method is called a rim shot playing method). ), The nail 7a of the latch 7 may be hit, and it is necessary to perform with caution. In addition, metal latches are made by bending metal plates,
Since it is manufactured by welding or the like, there are many problems such as high manufacturing costs.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. It is an object of the present invention to reduce the number of parts without requiring a latch, and to enable natural vibration of a rim. It is an object of the present invention to provide a drum capable of generating a woody rustic sound.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a head frame which holds a peripheral portion of a drum head and is inserted into an opening of a trunk body, and a wooden rim which presses the head frame. And a tightening bolt for directly connecting the rim to a lug provided on the outer periphery of the body, and a bolt holding portion for holding a head of the tightening bolt is provided on the rim. Further, according to the present invention, in the above invention, the bolt holding portion of the rim is constituted by a concave portion opened to the surface opposite to the lug, the head of the tightening bolt is housed in this concave portion, and the tightening is performed on the bottom surface of the concave portion. A bolt insertion hole through which a bolt is inserted is formed so as to penetrate through the lug side surface of the rim. Furthermore, the present invention is characterized in that, in the above invention, the depth of the recess is set to a depth such that the bolt head does not protrude from the recess.

In the present invention, the rim also functions as a conventional latch by directly holding the head of the fastening bolt. Therefore, no latch is required, and the number of parts can be reduced. In addition, if there is no latch, vibration of the rim is not affected, natural vibration of the rim is possible, and a woody simple sound can be generated. Furthermore, the player does not hit the latch when performing a rim shot. Since the bolt head is completely immersed in the recess, it is not hit with a stick.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 is a sectional view of a main part of a drum according to the present invention. The same components as those shown in the section of the prior art are denoted by the same reference numerals, and the description thereof will be omitted as appropriate. In the present embodiment, the lug 8 and the rim 16 are directly connected by the tightening bolts 9 without using the conventionally required latch. Rim 1
Reference numeral 6 denotes a 19-ply plywood made of, for example, maple material or the like, which is formed in a rectangular annular body having a rectangular cross section.
Are formed at equal intervals in the circumferential direction. The width W of the rim 16 is
The height H is set to a required dimension at about 15 to 20 mm, and protrudes forward from the head surface to facilitate a rim shot when mounted on the trunk main body 1.

The bolt holding portion 17 comprises a concave portion 17A which is open to the surface 16a opposite to the lug 8.
The head 9a of the tightening bolt 9 is housed in A. Recess 1
The depth of 7A is set so that the head 9a does not protrude outward. The bolt holding portion 17 communicates with the recess 17A and faces the lug 8 of the rim 16, in other words, the head frame 5
A bolt insertion hole 18 is formed on the surface 16b for pressing the bolt, and the tightening bolt 9 is inserted into the bolt insertion hole 18. When adjusting the tension of the drum head 2,
The tuning key is inserted into the recess 17A, fitted to the head 9a of the bolt 9, and the bolt 9 is rotated.

In the present embodiment, the rim 16 is an annular body having a uniform width (thickness) W over the entire circumference. However, the present invention is not limited to this, and as shown in FIG. The portion provided with the bolt holding portion 17 may be formed so as to bulge in the outer diameter direction and reinforced, and the other portion may be formed to have a small diameter. The rim 16 has a rectangular cross section that is long in the axial direction of the body 1.
As shown in FIG. 3, a surface 16a opposite to the lug 8 may be provided with a slope 16c which is inclined toward the outer periphery, and may have a trapezoidal cross section.

In the drum having such a configuration, since the tightening bolt 9 is held by the bolt holding portion 17 provided on the rim 16, the lug 8 and the rim 16 can be connected without using the conventional metal latch 7. It can be directly connected by the fastening bolt 9. Therefore, the number of parts and the manufacturing cost can be significantly reduced. Further, if the rim 6 is not pressed by the latch 7, natural vibration of the rim 16 itself becomes possible, and a simple woody sound can be obtained, which is suitable for application to a tom-tom rim. Further, without the latch 7, when the rim 16 is hit with the stick 4, there is no possibility of hitting the latch 7 by mistake, and the playability is excellent. In addition, since the bolt head 9a is completely embedded in the recess 17A, the bolt 4 is not hit with the stick 4. Further, since the rim 16 is mounted on the body 1 so as to protrude forward of the drum head 2,
You can play with almost no uncomfortable feeling with a drum using a normal metal rim.

[0012]

As described above, the drum according to the present invention has a head frame that holds the peripheral edge of the drum head and is inserted into the opening of the trunk body, a wooden rim that presses the head frame, Since the rim is provided with a tightening bolt for directly connecting a lug provided on the outer periphery of the trunk body, and the rim is provided with a bolt holding portion for holding a head of the tightening bolt, a conventionally required metal is provided. No latch is required, the number of parts can be reduced, and an inexpensive drum can be provided. In addition, if there is no latch, natural vibration of the wooden rim can be obtained, and a simple woody sound can be obtained. In addition, there is no mistake shot that the latch is hit by mistake during the rim shot. Furthermore, since the bolt head was exposed outside the latch in the past, the bolt head could be hit with a stick,
In the present invention, since the bolt head is completely buried in the recess of the bolt holding portion, there is no fear as described above, and the playability is excellent.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing an embodiment of a drum according to the present invention.

FIG. 2 is a perspective view showing another embodiment of the rim.

FIG. 3 is a cross-sectional view of a main part showing still another embodiment of the rim.

FIG. 4 is a sectional view of a conventional drum.

FIG. 5 is a front view of a latch.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... trunk body, 2, 2a, 2b ... drum head, 3 ... head support tension mechanism, 4 ... stick, 5 ... head frame, 6 ...
Rim, 7 ... latch, 8 ... lug, 9 ... fastening bolt, 9a ...
Tightening bolt head, 16 ... rim, 17 ... bolt holding part,
17A: recess, 18: bolt insertion hole.

Claims (3)

[Claims] 1. A head frame that holds a peripheral portion of a drum head and is inserted into an opening of a body, a wooden rim that presses the head frame, and lugs provided on the outer periphery of the rim and the body. And a tightening bolt for directly connecting the tightening bolt to the rim, and the rim is provided with a bolt holding portion for holding a head of the tightening bolt. 2. The drum according to claim 1, wherein the bolt holding portion of the rim is constituted by a concave portion opened to a surface opposite to the lug, and a head portion of the tightening bolt is housed in the concave portion.
A drum, wherein a bolt insertion hole through which the tightening bolt is inserted is formed in a bottom surface of the concave portion so as to penetrate a lug side surface of the rim. 3. The drum according to claim 2, wherein the depth of the recess is set so that the bolt head does not protrude from the recess.