JP2578589Y2 - A drum with different parts of tone, pitch and vibration time. - Google Patents

Description

[Detailed description of the invention]

 [Industrial applications]

[0001] A drum that mainly hits the skin of the upper surface or the front upper surface. [Conventional technology]

Conventional drums emit almost the same sound in the left and right or up and down (or back and forth), and are slightly stronger on one side in Japanese Utility Model Publication No. 61-25031.
In Japanese Patent No. 34174, although different timbres and pitches can be generated in the outer lid, the inner lid, the sounding portion, and the like, there is a problem in that the vibration time and volume are easily reduced. [Problems to be solved by the invention]

[0003] Even if any of the outer lid, inner lid, inner cylinder, bulge, etc. of various timbres and pitches is added, or the number thereof is increased or increased, the vibration of the epithelium 2 is not so limited. Further, by changing the shape, the height, the structure of each part, and the like, it is possible to produce various pitches of a better tone. [Means for solving the problem]

The epithelium 2 is formed as long as possible to the left and right, and the outer lid, the inner lid, the inner cylinder, etc. are adhered near the left and right peripheral edges so as to conform to the shape of the peripheral edges as much as possible. Is provided so that the epithelium 2 can vibrate to some extent in the vicinity of the center. Further, on the lower surface of the part, the corrugated plate spring 16 (thickness, width, length, quenching temperature, etc. of the steel plate or the like is adjusted) Hanging )

[0005] A thin tube portion 17 or a thin neck portion 30 is provided at a portion where the outer cover, the inner cover, the inner tube, the bulge portion and the like come into contact with the epithelium 2. When connecting the bulge portion below the inner lid, the narrow neck portion 30 is also used.
Is provided.

A rotating lid 9 for opening and closing the outer lid 3 with a screw portion;
It is divided into the upper cylinder part 6 which matches it, and the upper and lower heights of the rotating lid, the upper surface shape (a material rising in the center, horizontal, etc.), a plurality of materials having different materials and sound quality, etc., are prepared and replaced. .

In the outer lid 4 (FIGS. 1 and 2) having a wide upper surface for increasing bass feeling and volume, a screw for passing the outer ring 10 through the outer lid skin frame 14 is formed on the upper surface of the outer lid 10. Stick 13
(Fig. 3) to adjust up and down. The inner side of the lower surface of the wide upper cylindrical portion 6 above the thin cylindrical portion 17 (the one separated inward from the outer peripheral ring 35 ) 2
0 denotes a threaded rod 13 (shown in FIG. 3) near recesses 18 and 19 (FIG. 2) obtained by bending the upper peripheral frame 11 of the epithelium 2 inward on the front and rear sides .
That) to Ru is more put support.

Openings 23 are provided on the lower surface of the inner lid, the inner cylinder, and the bulge and on the side surfaces of the large inner cylinder and the bulge, respectively.
In order to make the sound more audible to the outside, openings 24 are provided at several places on the body 1. [Action]

The air inside the outer lid, inner lid, inner cylinder, bulge, etc., struck on the upper surface or the upper part, becomes a sound that resiliently vibrates together with the epithelium 2 at that part, and reduces the bassiness due to their weight. Sound, but due to their attachment, the epithelium 2
The vibration of the epithelium 2 is increased by virtue of the vertical vibration of the corrugated spring 16 and the gravitational force.

The outer lid, the inner lid, the inner cylinder, and the swelling part are composed of the epithelium 2
Since the vibration of the epithelium 2 is restricted as the area and the weight of the epithelium 2 are larger, the narrow cylinder 17 or the narrow neck 30 is used as the contacting portion to narrow the vibration-restricted area of the epithelium 2. In addition, the sound which elastically vibrated in the inner lid or the outer lid, if there is a narrow tubular part or a thin neck part when it goes out into the lower bulge part or the inner cylinder, the vibration in the inner lid or the outer lid becomes stronger, It tends to be a high echo resonance. Without it, the sound will have a lot of bass feeling including those heavy feelings.

The outer lids 3 and 4 have a higher pitch when the upper surface is farther away from the epithelium (the lower pitch due to weight becomes stronger when too high), so that the outer lid 3 changes the pitch. For this purpose, the rotating lids 9 having different lengths (heights) of the upper cylindrical portion 6 are replaced and used. The upper surface of the outer lid 3 having a swelling at the center or center has more treble and elasticity than a flat object, and the timbre also depends on the hardness, thickness, shape, etc. of the material of the upper surface and each part such as the cylindrical portion. ,
Change the pitch. For the inner lid and inner cylinder, if the vertical length and weight are large, the bass feeling will be large, and in the bulge part, if the outer lid and the inner lid etc. above it are too heavy, the bass feeling will increase, and the echo-like resonance treble will be heard. It becomes difficult. Striking the periphery of the upper surface of the outer lid, inner lid, inner cylinder, etc., produces a higher sound than striking the center.

If the turning cover 9 of the outer cover 3 is large, it is difficult to turn it by hand, so that the outer cover 4 has an upper cover 10 as an upper cover and a screw 13 for the outer cover for adjusting the outer cover 10 is used for the epithelium 2. Screw rod 12
The screw bar 12 is adjusted by the turning hand 3 separately from the turning hand 32.
Adjusting at 3 can increase the treble sensation by tensioning each separately. [Example]

2 and 5, the epithelium 2 is made horizontally long, and FIG. 6 shows a circular case.

The corrugated spring 16 (adhered with an adhesive tape 26 or the like) in each figure is replaced with an elastic vibrator such as another coil spring, a spiral spring (vertical spiral), a bamboo shoot spring (horizontal spiral). hand
When hit from the upper surface , those vibrations go around each circular part, and then propagate to the next lower circular part one after another.
Liable speed is slow且force becomes weak that, when increasing the circular portion also <br/> increases the number, and rather Omokurushiku vibration of epithelial second vibrating
Evil Kusuru is, only the bent portions of the left and right in the corrugated spring 16 vibrates at the same time increase the vertical Typing epithelial 2 (horizontal portion
Hardly vibrates, and does not need to vibrate)
The force of vibrating the skin 2 is also strong due to the weight of the leaf spring .
Reinforces vibration of skin 2 limited by outer lid, inner lid, inner cylinder, etc.
At the same time, the sound characteristic of these adhesives can be included in the vibration sound.
It is . A weak spring 25 is attached to their lower ends, and the other end is lightly fixed to a lower skin 27 (a bottom plate or the like in the case of a single skin) to prevent unnecessary side running. When this corrugated spring is attached to the skin struck from the left and right sides, the weight of the corrugated spring hinders the horizontal vibration of the left and right skins, so that the sound volume (amplitude) is weak and the tone tends to deteriorate.

A female screw (thread root) 8 is provided on the inner surface of the cylindrical portion of the turning cover 9 of the outer lid 3 shown in FIG. 1, and a male screw (thread) 7 is provided on the outer surface of the upper cylindrical portion 6.

The right outer cover 3 in FIG.
8 produces a high tone and the left concave portion 29 produces a low tone.

In FIG. 6, the outer lid 3 is for high-pitched sounds, and the inner lid 5 is for low-pitched sounds.

Each of the outer lid, the inner lid, the inner cylinder, the swelling portion, and the corrugated spring in each of the drawings has the same effect even if only one is used. [Effect of the invention]

Although the epithelium 2 alone produces only a constant sound (which can increase the sense of high pitch by stretching the skin), the outer lid 3 produces various high-pitched sounds of various timbres and timbres, and the outer lid 4 emits a higher tone. Low sounds (higher than epithelium 2), inner lid, inner cylinder,
In the bulge portion, a sound lower than the epithelium 2 including the feeling of heavyness (a sound with a high sense of treble if the vibration of the epithelium is bad)
When the elastic sound in the lower outer lid and inner lid passes through the thin neck and thin tube,
It tends to bulge, the resonance tone which is treble feeling inner cylindrical portion, respectively
S, various size, shape, corrugated and their like material spring 16
Thus , sounds having different timbres, pitches, and vibration times can be generated.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line AA of FIG.

FIG. 2 is a top view (the lower main part of the epithelium 2 is indicated by...)

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a sectional view taken along line AA of FIG. 5;

FIG. 5 is a top view of another example (the lower part of the epithelium 2 is indicated by...)

FIG. 6 is a top view of another example (the lower part of the epithelium 2 is indicated by...)

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Torso 2, 27 ... Epithelium, lower skin 3, 4 ... Outer lid 5 ... Inner lid 6 ... Upper cylinder part 7, 8 ... Thread, thread valley 9 ... Turning lid 10 ... ... Outer cover 11... Upper peripheral frame 12... Screw rod (for epithelium) 13... (For outer cover) Screw rod 14... Peripheral frame for outer cover 15. Frame 16 Corrugated plate spring 17 Thin tube portion 18, 19 Concave portions on the front and rear surfaces of upper peripheral frame 11 20 Inside lower surface of upper tube portion (FIG. 1) 21 Inner tube 22 ... bulge part 23 ... opening part 24 ... opening part (of body 1) 25 ... weak spring 26 ... adhesive tape Reference numeral 30: Narrow neck portion 31: Circumferential ring for outer cover skin (FIGS. 3 and 1) 32: Hand for turning (for screw bar 13) 33: Hand for turning (for screw bar 12) 34 ... Threaded rod (for underskin) 35 ……… Circumferential ring (for epithelium and underskin)

Claims (6)

(57) [Scope of request for utility model registration] 1. A drum having an outer lid (3 or 4) adhered to the upper surface of the epithelium (2). 2. A drum which adheres an inner lid (5) to a lower surface of an epithelium (2). 3. The drum according to claim 2, wherein a thin neck portion (30) is provided on a lower surface of the inner lid, and a bulge portion (22) is attached therebelow. 4. The drum according to claim 1, wherein the lower portion of the outer lid is a thin tube portion (17). 5. The drum according to claim 1, wherein a corrugated spring (16) is adhered to a lower surface of the epithelium. 6. Drum according to claim 1, wherein the outer lid (3) comprises a turning lid (9) having threaded parts (7 and 8) which coincide on the respective inner and outer surfaces, and an upper tubular part (6).