JPH05127666A - Keyboard type glockenspiel - Google Patents

Abstract

PURPOSE:To increase the musical representing ability of the keyboard type glockenspiel by obtaining a sound having improved timbre, etc., and to prevent the musical instrument from increasing in size owing to the arrangement of a resonance body. CONSTITUTION:A sound generation body is composed of a circularly sectioned sound rod 31 and its convex curved surface can be struck with heads 38A and 38D which are the striking part 27A of a hammer 27 and different in hardness. The heads 28A-38D which strike are changed by stepping on a shift pedal. A hammer shank 37 is elliptically sectioned and flexible and gives an instantaneous stroke. A damper 45 abuts on the shaft end part of the sound rod 31 to damp a sound, and a Helmholtz type resonance box 51 is arranged below the shaft end part with its opening 51A up. Further, the sound rod 31 is clamped with two cords 34 and 101 so that the sound rod can freely vibrate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard-type Glockenspiel, in which a hammer shank is made flexible by hitting a curved surface of a sound rod by sliding a hammer having different hardness. By providing a damper that abuts and stops the sound, a resonance box is arranged opposite to the sound stick, or by sandwiching the sound stick with a string, the musical expression power is improved. ..

[0002]

2. Description of the Related Art The conventional keyboard-type Glockenspiel is
It was provided with a striking mechanism that operates by key depression, and this striking mechanism had a configuration utilizing the biasing force of a spring action force. The hammer that constitutes the striking mechanism is made of brass, and the hammer strikes the band plate-shaped sound plate that is the sounding body. A resonance tube (closed tube) is arranged on the opposite side of the striking surface of the sound plate, and the resonance tube is set to resonate with the overtone of the sound plate. This is to shorten the height of the resonance tube and improve the mountability. Further, the striking mechanism does not have a sound damper for interlocking with the key.

[0003]

However, the conventional keyboard-type Glockenspiel has the following problems due to its structure. Firstly, since the hammer is made of one kind of material (brass), the timbre cannot be changed during the performance, and the musical expression ability is limited.
Secondly, since the stop sound is inaccurate, when a fast melody is played, the sounds are mixed and the melody becomes unclear. Thirdly, a closed tube for resonance is placed on the sound board,
Since the mounting volume is increased, the musical instrument becomes larger, and the overtone resonance due to the closed tube causes a poor sense of pitch in the low frequency range.

Therefore, an object of the present invention is to provide a keyboard-type Glockenspiel with enhanced musical expression.

[0005]

According to a first aspect of the present invention, in a keyboard-type Glockenspiel that strikes a sounding body with a hammer that rotates in response to a key operation, the sounding body is struck. Is composed of a rod-shaped body formed of a projecting curved surface, and the hammer has a plurality of striking portions of different hardness arranged along a direction substantially orthogonal to the axial direction of the sounding body, and the sounding body It is a keyboard-type glockenspiel equipped with a moving mechanism having a manipulator that relatively moves the hammer in a direction substantially orthogonal to the axial direction of the sounding body.

According to a second aspect of the present invention, in a keyboard-type Glockenspiel that strikes a sounding body with a hammer that rotates in response to a key operation, a hammer that connects the rotation center of the hammer and the hammer is provided. At least a part of the shank is a flexible keyboard-type glockenspiel.

According to a third aspect of the invention, in a keyboard-type Glockenspiel that strikes a sounding body with a hammer that rotates in response to a key operation, the sounding body is formed of a rod-shaped body, and the sounding body is formed. Is a keyboard-type glockenspiel in which a sound deadening member is disposed so as to be able to come into contact with the vicinity of a position that is the antinode of the vibration. Here, the vicinity of the antinode of vibration may be, for example, the end portion in the axial direction of the sounding body, or any one of a plurality of positions in the support section in the axial direction of the sounding body.

According to a fourth aspect of the present invention, in a keyboard-type Glockenspiel that strikes a sounding body with a hammer that rotates in response to a key operation, the sounding body is formed of a rod-shaped body, and the opening is formed. Is a keyboard-type glockenspiel in which a resonator is arranged near the end of the sounding body in the axial direction so as to open in the vibration direction of the sounding body.
Here, the resonator may be, for example, a Helmholtz type resonator.

According to a fifth aspect of the present invention, in a keyboard-type Glockenspiel that strikes a sounding body with a hammer that rotates in response to a key operation to produce sound, the sounding body is at a position that serves as a node of vibration caused by the striking. The sounding body is composed of a rod-shaped body having a groove formed on the outer surface in the vicinity thereof, and is stretched along a direction substantially orthogonal to the axial direction of the sounding body and provided with a first string-like member engaging with the groove. The keyboard-type glockenspiel is provided with a second string-shaped member which engages with the groove of the first string-shaped member and holds the sounding body between the first string-shaped member and the groove.

[0010]

In the keyboard-type Glockenspiel according to the invention described in claim 1, the hammer is relatively moved with respect to the rod-shaped sounding body by operating the manipulator, so that the striking portion having an arbitrary hardness is obtained. You can hit the sounding body.

In the keyboard-type glockenspiel according to the second aspect of the present invention, since the hammer shank has flexibility, the hammer can hit the sounding body instantaneously.

In the keyboard-type Glockenspiel according to the third aspect of the present invention, the sound deadening member is brought into contact with the vicinities of the vibrations of the rod-shaped sounding body to suppress the vibration of the sounding body. For example, when the shaft end is pressed in the axial direction, a particularly remarkable effect is obtained.

In the keyboard-type Glockenspiel according to the invention described in claim 4, since the resonance body is arranged at the axial end portion of the sounding body, particularly the fundamental sound of the low-pitched sound portion is emphasized to make the pitch accurate. You can

In the keyboard-type Glockenspiel according to the fifth aspect of the present invention, since it is supported in a suspended state, the sounding body vibrates in a vibration state close to free vibration. In addition, axial displacement of the rod-shaped sounding body can be prevented, and the sounding body can be easily attached and detached.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show a keyboard type glockenspiel according to a first embodiment of the present invention.

As shown in these figures, the keyboard-type Glockenspiel has a main body 15 accommodating a keyboard 11, a striking mechanism 12 and a sounding body portion 13, and a support base 16 for supporting the main body 15. There is. Here, in order to improve portability, the main body 15 and the support base 16 are configured to be separable.

The keyboard 11 is composed of 49 keys 21, and these keys 21 are supported swingably in the vertical direction with a balance pin 23 standing upright in a reed 22 of the keyboard reed as a fulcrum. A striking mechanism 12 is arranged above the rear ends of the keys 21. The striking mechanism 12 has substantially the same structure as the action of a conventionally known grand piano, and is pushed up by a support heel 25 abutting the capstan screw 24, a jack 26 swingably supported by the support 25a, and a jack 26. It has a hammer 27 and the like that rotates in a vertical direction.

Above the striking mechanism 12, the above-mentioned sounding body 1 is provided.
3 are arranged, and the sounding body portion 13 has a sound stick 31 which is a sounding body arranged corresponding to each key 21.
The sound stick 31 is composed of 49 treble to bass sounds, and the key 21
Are arranged side by side in the same direction as. These sound rods 31 are made of metal, for example, cylindrical rods of a constant diameter such as steel and aluminum, and are located at a position approximately 22.4% of the length from both ends in the longitudinal direction (axial direction). Supported by. Further, the lengths of the sound sticks 31 are different from each other, and the sound sticks in the low frequency range are formed longer. However, in the low-pitched sound portion, the lengths of the sound sticks are made substantially the same, and the diameter of the central portion is made smaller than that of both end portions so that a low-pitched sound is generated to prevent extension of the sound stick length. The bass may be sounded by attaching weights to both ends of the bass without changing the diameter of the sound bar.

As shown in FIG. 1, at a position of about 22.4% from the longitudinal ends of the sound stick 31 (22.4% of the total length of the sound stick 31), Band-shaped support plates 32 and 33 are disposed below the support plates 32 and 3 respectively.
The sound stick 31 is supported by the string 3 via a string 34. String 34
Both ends thereof are tied to and locked by a pair of cord stoppers 35, 35 projecting on both sides of the sound rod 31, and an intermediate portion thereof is wound around the sound rod 31. That is, the string 34 causes the sound bar 31 to move to the support plate 32,
It is supported in a suspended state on 33. Specifically, the sound rod 31 is supported by the string 34 in a floating state without directly contacting the support plates 32 and 33.

Therefore, in each of the sound rods 31, an axially intermediate portion between the two supporting positions of the strings 34 constitutes a hit portion hit by the hammer 27. .. As described above, the hammer 27 is rotatably supported on the striking mechanism 12 by the flange 36 with the base end of the hammer shank 37 as a fulcrum.
Hammer 2 fixed to the tip of hammer shank 37
7 is made of ABS resin, and its shape is formed into an elliptical shape having a predetermined width. Then, the striking portion 27A of the hammer 27 that strikes the lower curved surface of the sound rod 31, which is the striking portion.
Has a plurality of heads 38A, 38 along its width direction.
B, 38C, and 38D are embedded in order. Head 3
8A is made of synthetic leather, head 38B is made of rubber, head 38C is made of aluminum, and head 38D is made of brass. That is, the striking portion 27 of the hammer 27
A has four portions (heads) of different hardness along the direction orthogonal to the axial direction of the sound rod 31.
In this case, the hammer shank 37 is made of a bar material having an elliptical cross section, and the minor axis of the elliptical shape is set in the rotation direction of the hammer 27, and has a predetermined flexibility as a whole. Is. For example, the hammer shank 37 can be largely flexed as compared with a conventionally known action hammer shank having a rectangular cross section.

The hammer 27 is movable in the direction orthogonal to the axial direction of the sound rod 31.
For example, by adopting the same structure as the shift pedal mechanism of the grand piano, the striking mechanism 12 itself is configured to be slidable in the orthogonal direction, and its movement distance can be adjusted by depressing the shift pedal 41. is there. Reference numeral 42 is a push-up rod that transmits the operation of the shift pedal 41 to the shift lever. That is, when the push-up rod 42 is lifted by depressing the shift pedal 41, the shift lever swings around the fulcrum, and the entire keyboard 11 is moved along the key arrangement direction (direction orthogonal to the axis of the sound rod) via the keyboard reed. It moves by a predetermined distance. The push-up rod 42, the shift lever, and the like constitute a moving mechanism of the hammer 27. In FIG. 3, 43 is a damper pedal and 44 is an all damper pedal.

As shown in FIG. 1 again, a damper 45 and an all damper 46 are provided at both ends of each sound rod 31, respectively. The damper 45 is disposed in the vicinity of the rear end of the sound rod 31 so as to be movable toward and away from the sound rod 31 in the axial direction, and can come into contact with the end surface of the sound rod 31 to suppress its vibration. 47 is a damper wire. The all damper 46 is arranged below the front end of the sound rod 31, and is arranged so as to be vertically movable. Both the damper 45 and the all damper 46 are configured to be operated via the damper pedal 43 and the all damper pedal 44.

A Helmholtz type resonance box 51 is disposed below the rear end of the sound rod 31. The resonance box 51 is arranged in close proximity so that its opening 51A opens toward the vibration surface of the end of the sound rod 31 (upward). The resonance box 51 is preferably arranged at a position where the opening 51A is separated from the end of the sound rod 31 by a predetermined distance, and the resonance box 51 is arranged in a predetermined empty space. The resonance box 51 is provided only for the one octave sound rod 31 in the low tone range. Alternatively, the resonance box 51 may be arranged for all the sound sticks 31. Furthermore, instead of the resonance box 51,
For example, a closed tube resonator may be arranged facing each sound rod 31 from below. Alternatively, one resonance box may be provided so as to face the lower ends of the respective sound rods 31 and have a common opening extending in the arrangement direction.

The support 16 has a caster at its lower end. Further, the main body 15 supported by the support base 16 may be detachable from the support base 16. Further, the musical score plate 52 covering the upper surface of the main body 15 has a structure in which the musical score plate 52 is inclined and held at five predetermined angles so as to act as a sound reflection plate in a playing state. The structure is such that its angle can be adjusted. As a result, the directivity of the sound to the listener side is strengthened, and the volume can be adjusted according to the opening. Further, in order to enable tuning without changing the length of the low-pitched sound rod, only the central portion may be cut to have a small diameter. Alternatively, the diameter of the sound stick 31 may be left unchanged, and weights may be attached to both ends of the sound stick 31. Also, this sound stick 3
The sectional shape of 1 is not limited to a circular shape, and the lower surface (the surface to be hit) may be circular, and the upper surface thereof may be a flat surface or any other shape.

In the keyboard-type Glockenspiel having the above-described structure, the striking mechanism 12 operates in response to a key depression by a key depression operation, and the hammer 27 causes the head 3 of the synthetic leather portion to operate.
8A strikes the center of the sound rod 31 from below. When the player wants to play with a different tone color, when the shift pedal 41 is depressed, the moving mechanism operates according to the amount of depression to move the hammer 27 by a predetermined distance in the direction orthogonal to the axis of the sound stick 31. To do. As a result, when the hammer 27 hits the sound stick 31 by the key depression operation, the hitting portion 27A
Will be displaced and will be hit with any of the heads 38B, 38C, 38D. Therefore, it is possible to change the timbre and perform. Further, in the above cases, the hammer shank 37 is made of a member having an elliptical cross section, so that it is possible to make a momentary impact. As a result, the hammer 27 does not interfere with the free vibration of the sound rod 31, and in this case as well, a suitable timbre can be obtained. Further, since the resonance box 51 is arranged in the low tone range, the fundamental tone thereof is emphasized and the pitch is accurate.

On the other hand, when the key is released, the damper 45 swings to come into contact with the axial end surface of the sound rod 31. As a result, the stop sound becomes quick and accurate, and the melody becomes clear due to the effect of the damper, especially in the performance of a fast melody. When performing a mute performance, the all damper pedal 44 is depressed. The sound stick 3 is pressed by the pressing force corresponding to the amount of depression.
The all damper 46 is pressed to the position 1. Therefore, it is possible to perform a weak sound at a desired volume. Since the sound rod 31 is supported at a position of about 22.4% from both ends in the axial direction, and the damper 45 is in contact with both ends to stop sound, resonance action and These damper effects are the strongest. This is because the support position of the sound stick 31 serves as a node for the vibration of the sound stick 31 due to impact, and both ends serve as antinodes of the vibration. Since the sound rod 31 is supported in the suspended state, the sound rod 31 vibrates in a vibration state close to free vibration. In addition, damper 2
The arrangement position of 5 may be the front end portion of the sound stick 31, and the same effect can be obtained even if the resonance box is arranged at any of four positions in the vibration direction of the end portion of the sound stick 31.

Next, a second embodiment of the present invention will be described with reference to FIGS. 6 and 7. As shown in FIG. 6, at a position of about 22.4% from both ends in the axial direction of the sound rod 31 (a position which becomes a node of vibration when the sound rod 31 vibrates by hitting with the hammer 27). An annular groove 100 having a predetermined depth and a predetermined width is formed on the outer peripheral surface of the sound rod 31 along the circumferential direction.

The string 34 has a predetermined thickness, length and material,
Both ends thereof are tied to a pair of cord stoppers 35 which are gate-shaped metal fittings. The string 34 is separated by a predetermined distance from the support plates 32, 33.
Between the cord stoppers 35, 35 protruding from the upper surface, the cords are stretched horizontally with a predetermined tension so as to be orthogonal to the axis of the sound rod 31.
An intermediate portion in the lengthwise direction of the string 34 stretched is the annular groove 100 of the sound rod 31 (the annular groove 10 on the lower surface side of the sound rod 31).
0) is engaged and engaged. That is, the sound stick 31
Is supported by the string 34 in a floating state without contacting the upper surfaces of the support plates 32 and 33.

A string 10 for attaching and detaching the sound rod, which is a second string.
No. 1 is fitted and engaged in the annular groove 100 portion on the upper surface side of the sound rod 31. More specifically, both ends of the string 101 having a predetermined length and a predetermined thickness pass through holes 102 vertically penetrating the support plates 32 and 33, respectively, and protrude toward the back surface side of the support plates 32 and 33, and are larger than the diameter of the hole 102. By forming a thick knot 101A, it is fixed to the support plates 32 and 33. The holes 102 formed in the support plates 32 and 33 are arranged outward of the sound rod 31 than the cord stoppers 35 and 35, for example, outside the tensioned cord 34. ing. Therefore, as shown in FIG. 7, the cord 101 is fitted and locked in the annular groove 100 so as to be slanted and bias the sound rod 31 toward both ends in the axial direction. As a result, the sound stick 31 is pulled toward both ends in the axial direction by the cords 101, 101, and the shift in both the axial direction and the arrangement direction can be prevented. At the same time, by removing the string 101 from the annular groove 100 (in FIG. 7, the phantom line indicates the string 101 at the time of removal).
This sound bar 31 can be easily removed. Further, as compared with the first embodiment, the annular groove 100
Since the strings 34 and 101 are engaged only at the upper and lower two points (because the sound stick 31 is sandwiched vertically at a predetermined position),
The sound stick 31 vibrates in a vibration state closer to free vibration. Further, if the cord 101 is made of, for example, an elastic material such as rubber, the sound rod 31 can be locked with a constant force. As a support structure of the sound sticks 31, for example, a pair of rails may be provided above and below the sound sticks 31 along the arrangement direction, and the sound sticks 31 may be sandwiched via a cushioning member such as felt. .. Other configurations and operations are the same as those in the first embodiment.

[0030]

According to the present invention, since the sounding body can be struck by the striking parts having different hardnesses, it is possible to change the timbre into a plurality of types, and the musical expression ability during the performance is dramatically improved. .. Further, since the sounding body can be hit instantaneously, free vibration of the sounding body is not hindered, and a suitable timbre can be obtained. Further, since the sound is stopped by coming into contact with the shaft end of the sounding body, the sound is made accurate and the playability is improved. Especially, the fast melody becomes clear. Furthermore, the fundamental tone resonance becomes possible, and the pitch feeling becomes clear. Especially in the low range,
A single sound stick can correct a weak fundamental sound. Furthermore, since a small resonance box is sufficient, the musical instrument can be downsized. Moreover, the sounding body can be easily attached and detached,
It is also possible to prevent axial displacement of the sounding body.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a striking mechanism of a keyboard type glockenspiel according to a first embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing a striking mechanism of a keyboard-type Glockenspiel according to the first embodiment of the present invention.

FIG. 3 is a front view showing a keyboard type glockenspiel according to the first embodiment of the present invention.

FIG. 4 is a side sectional view showing a keyboard type glockenspiel according to the first embodiment of the present invention.

FIG. 5 is a plan view showing a keyboard type glockenspiel according to the first embodiment of the present invention.

FIG. 6 is a perspective view showing a part of a striking mechanism of a keyboard type Glockenspiel according to a second embodiment of the present invention.

FIG. 7 is a front view showing a structure of a sound stick support portion of a keyboard type glockenspiel according to a second embodiment of the present invention.

[Explanation of symbols]

12 striking mechanism, 13 sounding body section, 21 keys, 27 hammer, 27A hammer striking section, 31 sound rod, 34
String (first string-shaped member), 37 hammer shank, 4
1 shift pedal, 45 damper, 51 resonance box, 5
1A Resonance box opening, 100 Annular groove, 101 String (second string-shaped member)

Claims (5)

[Claims] 1. A keyboard-type Glockenspiel that strikes a sounding body with a hammer that rotates in response to a key operation to produce the sounding body, and the sounding body is composed of a rod-shaped body whose hit surface is a convex curved surface. The hammer has a plurality of striking portions having different hardnesses arranged along a direction substantially orthogonal to the axial direction of the sounding body, and the sounding body and the hammer are substantially orthogonal to the axial direction of the sounding body. A keyboard-type glockenspiel comprising a moving mechanism having an operator that relatively moves in the direction of movement. 2. In a keyboard-type Glockenspiel that strikes a sounding body with a hammer that rotates in response to a key operation, at least a part of a hammer shank that connects the rotation center of the hammer and the hammer is acceptable. A keyboard-type glockenspiel characterized by having flexibility. 3. A keyboard-type Glockenspiel that strikes a sounding body with a hammer that rotates in response to a key operation and produces the sounding body with a rod-shaped body, and a position that is an antinode of vibration of the sounding body. A keyboard-type glockenspiel characterized in that a sound deadening member is disposed so as to be able to contact in the vicinity. 4. A keyboard-type Glockenspiel that strikes a sounding body with a hammer that rotates in response to a key operation to produce the sounding body, wherein the sounding body is formed of a rod-shaped body, and an opening portion thereof is in a vibration direction of the sounding body. A keyboard-type Glockenspiel, characterized in that a resonator is arranged near the end of the sounding body in the axial direction so as to open toward. 5. A keyboard-type Glockenspiel that strikes a sounding body with a hammer that rotates in response to a key operation to produce a sound, and forms a groove on the outer surface of the sounding body in the vicinity of a position that is a node of vibration caused by the striking. And a first string-like member which is stretched along a direction substantially orthogonal to the axial direction of the sounding body and engages with the groove, and is engaged with the groove of the sounding body. A keyboard-type glockenspiel characterized in that a second string-shaped member for sandwiching a sounding body is provided between the first string-shaped member and the first string-shaped member.