JPS6012586A - Snare drum - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary of the Invention] The present invention relates to a snare drum that improves the rise characteristics of sound, provides various tones, and improves musical expressiveness.

[Prior art]

In general, a snare drum (small drum) consists of a layered wire (usually called a snare wire) consisting of multiple inner strings or coiled metal strings (snatsu wire) stretched diametrically against the back side of the drum head. By bringing the layer line of the drum into contact with the back side drum head as necessary, the imaging of the back side drum head is transmitted to the layer line, resulting in the light, disjointed tone characteristic of the instrument. A special sound effect called the so-called tabling effect is produced, and by moving this layer line away from the back side head, the sound is changed to the dull sound of a normal drum, and these two types of tones can be used selectively.

Conventionally, the device for bringing the layer line into contact with and separating it from the backside drum head has been achieved by moving both ends of the layer line up and down using a well-known baraken mechanism installed in the drum body. is common.

By the way, looking at the vibration of the layer wire, when the front drum head is hit, the air column inside the body transmits the vibration to the rear drum head, causing it to vibrate, and the layer wire begins to vibrate in response to this vibration. It has the disadvantage of poor sound rise characteristics.

In addition, the sound transmitted from the front drum head to the back drum head inevitably becomes light and unclear because high-frequency sounds quickly attenuate and become smaller due to the viscous resistance of the air column. , (p pianissimo) to ff (fortissimo), a sufficient tone effect could not be obtained over the entire range.

[Summary of the invention]

This invention was made in view of the above points,
The present invention provides a snare drum which solves the above-mentioned disadvantages at once by arranging layer wires in the body and selectively bringing the layer wires into contact with and away from the inner surface of the front side drum head.

Another object of the present invention is to provide a layer line on the back side drum head in addition to the layer line on the front side drum head, and by selectively switching the layer line, four types of tones can be used. We aim to provide snare drums that offer a wide range of musical expressiveness.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 1 is an external perspective view showing an embodiment of a snare drum according to the present invention, FIG. 2 is a vertical sectional view, and FIG. 3 is FIG. 2 III.
-LIT bond sectional view, FIG. 4 is a front view of the height adjustment mechanism, and FIG. 5 is a sectional view of the tension adjustment mechanism.

In these figures, a snare drum 1 is constructed by having a front side drum head 3 and a back side drum head 4 metal-covered at the openings at both ends of a cylindrical body 2, respectively.

In other words, the surface drum head 3 covers the upper opening by fixing its peripheral edge to an annular head frame 5 that fits around the outer periphery of the upper opening of the body 2, and this head frame 5 also covers the upper opening of the body 2. The bolts 7 are pressed downward by a clamping frame 6 that fits around the outer periphery of the upper opening. Connected by screws. Therefore, the clamping frame 6
Tightening is performed by adjusting the rotation of the bolt 7 to move it up and down, thereby changing the tension of the front drum head 3, thereby changing the tone and pitch of the drum itself.

Similarly, the back side drum head 4 also has a head frame 9. Clamping frame 10.
Tightening is done by supporting and tensioning the bolts 11 with uniform tension.

Above the inside of the body 2, a first sound line 15 is provided so as to be stretched over a frame 16 and is selectively brought into contact with and separated from the outside of the body 2 on the inner surface of the front side drum head 3. The frame 16 is formed into a long frame shape and is open at the top and bottom, and the body 2
The guides 17A and 17B extend in the diametrical direction, and both ends thereof are fixed to the inner surface of the body 2, and are vertically movable. First Hibikisen 15 ore, for example, a large number of metal wires made by winding steel wires with a diameter of about 0.8 mm into a coil shape,
For example, it is configured with 20 strips, and both ends thereof are fixed and held by Snutby plates 19A and 19B respectively arranged on the upper surface of both ends of the frame 16, and one Snutby plate (19) is controlled by a tension adjustment mechanism to be described later.
A is moved and adjusted in the diametrical direction of the torso 1 and 2, and K is tightened.

In addition, the other Snutby plate 19BH frame 16
It is fixed with a screw on the top.

A shaft 21 for vertically moving the frame 16 is provided below the frame 16. This shaft 21 has a pair of left and right elongated holes 2 formed in the circumferential surface of the body 2 that are long in the vertical direction.
Both ends are supported by 2A and 22B, and a rotating lever 23 is attached to one end that projects outside of the body 2.

The shaft 21 and the frame 16 each have two sets of left and right link mechanisms 2, each consisting of a pair of links 24a and 24b.
4A.

24B. Link mechanism 24A.

24B, as the shaft 21 is rotated by operating the handle 23, the pair of links 24a and 24b are bent and extended as shown in FIG. The structure is such that the frame 16 is pushed up to the uppermost position when it is extended, and the first sound line 15 comes into contact with the inner surface of the front drum head 3 at this time. Note that the upper end of the link 24a is 7 frames 16.
A link 24b is fixed to the shaft 21 and is pin-coupled to the lower end of the link 24a.

A pair of left and right height adjustment mechanisms 30, 31 for finely adjusting the shaft 21 in the vertical direction is disposed on the outer peripheral surface of the body 2.

As shown in FIG. 4, the height adjustment mechanism 30 on the handle 23 side includes an adjustment screw 32, a screw mounting member 33 which is screwed and fixed to the body 2 and into which the adjustment screw 32 is threaded, and which is fixed to one end of the shaft 21. The adjustment screw 32 includes a block 34 into which the tip end of the adjustment screw 32 is screwed. On the other hand, the height adjustment mechanism 31 on the opposite side of the handle 23 does not include a block fixed to the shaft 21, but simply consists of an adjustment screw 32 and a screw mounting member 33 as shown in FIG. 32 is directly screwed into the outside of the shaft 21. Therefore, when each adjustment screw 32 of a pair of height adjustment mechanisms 30.31 is adjusted by rotation in the same direction, the shaft 21 is adjusted to move up and down, thereby changing the upward stroke of the frame 16 and adjusting the first position relative to the front side drum head 3. The contact pressure of the sound wire 15 is adjusted.

As shown in FIG. 5, the tension adjustment mechanism 40 of the first acoustic wire 15 is screwed into a through hole 41 provided on the surface of the body 2 and into a screw hole provided on the side end surface of the frame 16. A tension adjusting screw 42 whose tip portion faces inside the frame 16, and a turn rotatably supported by a horizontal pin 44 on a flange 43 integrally protruding inside the side end surface of the frame 16 in the direction of the arrow. This rotating lever 4
The upper end of 5 is in contact with the inner surface of the snappy plate 19A, and the lower end is in contact with the tip end surface of the tension adjusting screw 42.

Therefore, when the tension adjustment screw 42 is tightened and the rotation lever 45 is rotated clockwise about the horizontal pin 44, the snappy plate 19A moves toward the circumferential edge of the body 2 to reduce the tension of the first sound line 15. Increase and conversely screw 42f
: When loosened, it is released from the rotation lever 45, so the 19th
It moves toward the center of the fuselage 2 due to the tension of the wire 15 itself,
The tension in the first acoustic wire 15 is reduced.

The reference numeral 50 shown in FIG. 2 is a connecting rod that supports the frame 16 and prevents the shaft 21 from rotating over a certain angle, in other words, the frame 16 itself from moving up and down over a certain range. is pin-coupled to the inner surface of the body 2, and the other end is connected to the frame 16 through an elongated hole and a pin.

As shown in FIGS. 1 and 2, a second acoustic wire 60 is provided on the outer surface of the back side drum head 4. As shown in FIGS. Like the first acoustic line 15, this second acoustic line 60 is constructed by arranging a large number of metal wires, and both ends of the second acoustic line 60 have snappy braises (6).
1.62, and these snappy plates 61.62 are connected to a moving base 66 and an adjustment screw base 6T, respectively, which constitute a conventionally known detachable mechanism 65 disposed on the outer peripheral surface of the fuselage 2. The movable base 66 is vertically movably disposed on a block 70 attached to the body 2, and is moved vertically by a lever 72.Similarly, an adjustment screw base 67
It is also configured to be moved up and down with respect to the body 2.

Therefore, when the lever T2 is operated to move the movable base 66 up and down, the 8-second sound line 60 is selectively brought into contact with and separated from the back side drum head 4, and the movable screw base 6T is moved up and down. The tension is adjusted by

In this manner, the snare drum 1 having such a configuration can be used in a total of four different ways, and it is possible to select a tone suitable for a performance.

That is, in the fourth usage mode, the tabling effect is obtained when the first acoustic line 15 is in contact with the front side drum head 3 and the second acoustic line 60 is separated from the back side drum head 4. In this case, the first acoustic line 15 also vibrates at the same time as the front drum head 3 is hit, so a hard sound with good rise characteristics can be obtained. Since there is little vibration transmission loss, the sound range is expanded, and a sufficient timbre effect ranging from pp to ff can be obtained.

In the second usage mode, the front side drum head 3 and the back side drum head 4 have first and second acoustic lines 15 and 6, respectively.
This is to obtain the tabling effect of both exchange lines 15 and 60 in a state where 0 is in contact with each other. In this case as well, the first acoustic line 15 has good rise characteristics of the p sound and expands the range, but since the two tabling effects are TL-folded, it is not possible to obtain a tabling effect that is slightly different from the above. can.

In the third usage mode, the first acoustic line 15 is separated from the front side drum head 3, and the second acoustic line 60 is separated from the back side drum head 3.
It produces a tabling effect when it is in contact with the snare drum, and in this case it produces the same tone as a conventional snare drum. And the fourth usage mode is the first and second acoustic lines 15.60
are set apart from the drum head 3, 4, and in this case the vibrations of the drum heads 3, 4 are not transmitted to the first and second acoustic lines 15, 60, and therefore the drum A performance will be held.

〔Effect of the invention〕

As described above, the snare drum according to the present invention is configured such that the layer wire is disposed within the body and is selectively brought into contact with and separated from the inner surface of the front side drum head.
The rise characteristics of the sound are good, and there is little transmission loss due to the viscous resistance of the air column, so high sounds extend well p p -ff
You can effectively obtain up to 100% of sound.

In addition to the layer lines on the back side drum head, this invention also provides a layer line on the outer surface of the back side drum head, and the layer line is placed on the head separately and independently from the layer line on the front side drum head. Since it is configured to selectively contact and separate from each other, a total of four types of tones can be used properly, giving a wide range of performance.

Furthermore, since the layer wires disposed inside the fuselage are switched from outside the fuselage, handling is easy.

[Brief explanation of drawings]

Fig. 1 is an external perspective view of an embodiment of the snare drum according to the present invention as seen from below, Fig. 2 is a vertical cross-sectional view, Fig. 3 is a cross-sectional view taken along line ■-■ in Fig. 2, and Fig. 4 is a FIG. 5 is a front view of the height adjustment mechanism and a sectional view of the tension adjustment mechanism. 1... Snare drum, 2... Body, 3...
Front side drum head, 4... Back side drum head,
15...1st sound line, 60...2nd sound line. Figure 1 Figure 2 Figure 3

Claims (2)

[Claims] (1) A layer line is arranged inside the body, and this layer line is operated from outside the body and moved up and down to selectively contact and separate from the inner surface of the front drum head. Snare drum. (2) The first acoustic line, which is arranged inside the body and moves up and down by an operation from outside the body, comes into contact with and separates from the inner surface of the front drum head, and the first sound line corresponds to the outer surface of the rear drum head. A snare drum comprising: a second acoustic wire that is arranged and operated separately and independently from the first acoustic wire so as to selectively come into contact with and separate from the back side drum head.