JP3228911B2 - Music box drum and music box using it - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum capable of changing the arrangement of pins for playing a diaphragm and a music box using the same.

[0002]

2. Description of the Related Art Conventionally, various types of music boxes are known, but the current mainstream is a drum type music box.

A drum type music box has a plurality of pins 2 provided on an outer peripheral surface as shown in a schematic top view of FIG. 1 (FIG. 1a) and a sectional side view taken along the line AA of FIG. 1 (FIG. 1b). A drum 1 and a diaphragm 3 having a plurality of vibrating valves 4 forming a musical scale in a certain range as a whole are arranged such that a tip of the pin 2 can overlap an end of the vibrating valve 4,
A music box having a playing mechanism for playing music by the plurality of pins 2 playing a predetermined vibration valve 4 in a predetermined order as the outer peripheral surface of the drum 1 rotates around the rotation shaft 5 at a constant speed. . The drum 1 is driven by a suitable power source such as a mainspring device (not shown) or an electric motor connected to the rotating shaft 5 of the drum 1.

[0004]

However, most of the drums used in conventional drum-type music boxes have fixed pin positions, and can only play music set in advance at the time of manufacture. .

[0005] Therefore, when it is desired to listen to a musical piece different from the musical piece set at the time of manufacture, it is necessary to purchase a drum-type music box or its performance mechanism. Furthermore, the types of music employed in commercially available drum-type music boxes or their performance mechanism units are limited, and for example, commercially available drum-type music boxes or their performance mechanism units, such as school songs of the user's alma mater or songs composed by the user himself. If you want to listen to music that is difficult to adopt in a drum music box, you need to order it from the manufacturer and specially manufacture it.
There was also the problem of being very expensive.

Some proposals have already been made to solve such a problem.

For example, Japanese Patent Publication No. 43-15232 discloses a method in which a drum is formed as an assembly of rotating elements corresponding to each vibration valve on a one-to-one basis, and a plurality of grooves for holding pins are provided in each rotating element. A drum for a music box has been proposed in which the pins can be transplanted and the rotating elements are connected to each other so that the engaging positions of the concave and convex portions on the side surfaces can be adjusted so that the playing position of the pins can be adjusted.

Japanese Utility Model Application Laid-Open No. 58-11796 proposes an all-gold rum for composition in which holes for inserting pins into the drum are regularly formed throughout the drum.

According to these proposals, by arbitrarily arranging pins in a plurality of pin holding grooves or holes provided in the rotating element or the drum, a pin arrangement corresponding to a desired music on the drum is provided. Is formed, and the music desired by the user can be played on the drum-type music box on hand.

However, the size of a pin in a drum type music box of a popular type for general household use is such that, even if it is considerably large, the diameter of the pin is 1 mm or less and the length of a portion protruding from the outer peripheral surface of the drum is 2 mm or less. It is.

[0011] Therefore, in the above two proposed techniques, very fine work is required to dispose the pins one by one in a predetermined groove (hole) on the drum, and furthermore, the possibility of pin loss is high and the pins are highly likely to be lost. There was a problem that careful attention was also required for the management of the information.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a music box drum capable of changing a music piece to be played more easily than before and a music box using the same.

[0013]

In order to solve the above problems, a drum for a music box according to the present invention comprises a rotating shaft and a plurality of outer peripheral plates surrounding the outer periphery of the rotating shaft. Some or all of them are not integral with the outer surface of the outer peripheral plate.
A first outer peripheral plate having a separately provided pin, and a second outer peripheral plate having no residual pin, and both are held at both ends of the rotating shaft and the outer peripheral plate. A drum for a music box having a pressing member, wherein the arrangement of the pins can be changed by changing the arrangement of the plurality of outer peripheral plates.
With such a configuration, the music box drum of the present invention can handle the outer peripheral plate having an appropriate size instead of the fine pins as in the related art, and can change the pin arrangement of the music box drum. Music can be changed at any time.

Further, in order to solve the above-mentioned problems, a music box of the present invention is a drum-type music box, wherein the drum for a music box according to claim 1 is used for a playing mechanism. With such a configuration, the music box of the present invention can change the music piece to be played more easily than before.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a music box drum according to the present invention will be described below with reference to the drawings.

FIG. 2 is a schematic top view of the drum for a music box of the present invention, and FIG. 3 is a line segment II-I shown in FIG.
FIG. 4 is a sectional view taken along line I of FIG.
It is sectional drawing in -I.

According to these drawings, the drum for a music box of the present embodiment has a rotating shaft 11 having notches 12 at both ends and a plurality of outer circumferential members surrounding the outer periphery of the rotating shaft 11 and having notches 14 at both ends. Plate 13, pins 15 provided on the outer surface of outer peripheral plate 13, and cutout 1 of outer peripheral plate 13
4 is roughly constituted by an outer peripheral plate 13 and two substantially hollow disk-shaped pressing members 16 for fixing the rotating shaft 11 by engaging with the cutouts 12 of the rotating shaft 11.

The rotating shaft 11 is a hollow or medium-closed substantially cylindrical member, and is connected to a power source (not shown) for driving the drum to rotate, and serves as a shaft for rotating the drum. In the present embodiment, notches 12 are provided at both ends so as to engage with the holding member 16.
It is also possible to adopt a configuration in which the holding member 16 covers the outer ends of both ends of the rotating shaft 11 (in a shape that does not hinder connection to the power source) without providing 2. Similarly, as shown in FIG. 3, in the present embodiment, a projection 17 is provided on the outer peripheral surface of the central portion to serve as a guide for the outer peripheral plate 13, but a configuration in which the projection 17 is not provided may be adopted. That is, the notch 12 and the projection 17 of the rotating shaft 11 may be formed in a desired shape and number without any particular limitation, or may be omitted.

As shown clearly in FIG. 4, the outer peripheral plate 13 is a member which is arranged on the outer surface of the rotating shaft 11 without any gap to form the outer peripheral surface of the drum. The thickness increases toward the portion forming the outer surface. The length of the outer peripheral plate 13 in the long side direction is the rotation axis 11
Is the same as the axial length of the outer surface excluding the notch 12. And, in principle, one outer peripheral plate (first outer peripheral plate) 13a
One pin 15 is provided on the outer surface of. Pin 1
The position of 5 is set so as to flip one specific vibration valve. The thickness of the outer surface of the outer peripheral plate 13, that is, the thickness of the outer peripheral surface of the drum is determined by the pin 15 of the outer peripheral plate 13 a.
Is determined according to the length of the sound represented by. In other words, when replacing the score of the desired music with the pin arrangement on the drum, one pin represents one sound on the score by playing one vibration valve. This is expressed by the distance between the adjacent pins in the direction, and the length (size) of the distance between the adjacent pins is adjusted by the thickness and the number of the outer peripheral plates (second outer peripheral plates) 13b having no pins 15. Therefore, the thickness of the outer peripheral plate 13a having the pin 15 is constant. At this time, a specific rule is set for the length of one sound used in the music, and the type of sound length actually used is limited, so the type of thickness of the outer peripheral plate 13b is also limited. It is practically sufficient to prepare an appropriate number according to the law. In addition, when expressing a very long sound or a rest, a pin 15
It is practically advantageous to use a plurality of outer peripheral plates 13b having no. FIG. 5 shows an example of such outer peripheral plates 13a and 13b. FIG. 5a shows an outer plate 1 with pins 15 on the outer surface.
3a and FIGS. 5b and 5c show the outer peripheral plate 13b without the pins 15. FIG. The outer peripheral plates 13 having different thicknesses as described above
Several kinds of b are prepared and used appropriately according to the length of the sound.

As shown in FIGS. 3 and 5, in the present embodiment, a projection 17 is provided on the rotating shaft 11,
A groove 18 corresponding to the projection 17 is provided on the outer peripheral plate 13 to form a guide, but such a guide may be omitted. Similarly, the cutout portions 14 of the outer peripheral plate 13 are not limited to the shapes shown in FIGS. 3 and 5, and have a desired shape and number as long as the rotating shaft 11 and the outer peripheral plate 13 can be fixed. Can be omitted or omitted.

The shape and properties of the pins 15 provided on the outer surface of the outer peripheral plate 13a are not particularly limited as long as the pins 15 can be flipped at the corresponding vibration valves. Further, in the present embodiment, the outer peripheral plate 13a is manufactured integrally with the outer peripheral plate 13a as shown in FIG. 3, but is manufactured separately from the outer peripheral plate 13a as shown by a dotted line in FIGS. It can also be fixed so as to be embedded in the outer peripheral plate 13a.

The two pressing members 16 are members for fixing the rotating shaft 11 and the outer peripheral plate 13 to hold the drum shape. In the present embodiment, the notch 12 of the rotating shaft 11 is formed on the inner peripheral surface thereof. And is formed in a substantially hollow disk shape in which the outer peripheral surface thereof is engaged with the cutout portion 14 of the outer peripheral plate 13. Then, the slit 2 which can be opened and closed by a door 22 as shown in FIG.
1, the procedure of inserting the outer peripheral plate 13 into the slit 21 with the slit 21 opened, and then moving the outer peripheral plate 13 in the drum rotation direction is repeated to form the desired shaft arrangement of the rotating shaft 11. After covering the entire outer surface with the outer peripheral plate 13, the slits 21 of the two pressing members 16 are formed.
Is closed to form a drum. The door 22 of the slit 21 needs to be in a closed state except when the outer peripheral plate 13 is replaced (rearranged) so that at least the notch 14 of the outer peripheral plate 13 can be pressed. There is no particular limitation on the means for holding the door closed, and a known door closing means such as a spring means can be used. The two pressing members 16 are bonded and fixed to the rotating shaft 11 with an appropriate adhesive. Alternatively, unlike the present embodiment, a means capable of detachably engaging the rotating shaft 11 and the holding member 16, for example, a pair of female and female spirals, is provided so that the rotating shaft 11 and the pressing member 16 Can be engaged, a predetermined outer peripheral plate 13 is disposed so as to form a predetermined pin arrangement, and then the other pressing member 16 is disposed at a predetermined position to form a drum. However, the shape of the pressing member 16 is not limited to these, and can be any desired shape as long as the rotating shaft 11 and the outer peripheral plate 13 can be detachably fixed.

In the present invention, if an indication (note, katakana, or the like) indicating a musical scale is attached to an appropriate position (near a pin, etc.) of each of the outer peripheral plates 13, the selection when assembling is facilitated. .

As described above, the drum for a music box of the present invention can change the pin arrangement on the outer peripheral surface of the drum by rearranging members of an appropriate size without handling fine members such as pins. It is easy to change the performance music.

By using the drum for a music box of the present invention configured as described above in a performance mechanism of a known drum-type music box, a music box in which a user can easily change musical pieces to be played is provided.

[0026]

As described above, in the music box drum and the music box using the same according to the present invention, the components of the drum are made easy to handle and the components can be rearranged by a simple operation. A music box drum and a music box using the same that can change the musical piece more easily than before are provided.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a playing mechanism of a conventional drum music box.

FIG. 2 is a schematic top view showing one embodiment of a drum for a music box of the present invention.

FIG. 3 is a cross-sectional view of the music box drum of FIG. 2;

FIG. 4 is a longitudinal sectional view of the drum for a music box of FIG. 2;

FIG. 5 is a diagram illustrating an outer peripheral plate used for the music box drum of FIG. 2;

FIG. 6 is a diagram showing a pressing member of the music box drum of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Rotation shaft 12 Notch 13a, 13b Peripheral plate 14 Notch 15 Pin 16 Holding member 17 Projection 18 Groove 21 Slit 22 Door

Claims (2)

(57) [Claims] 1. A pin comprising: a rotating shaft; and a plurality of outer peripheral plates surrounding an outer periphery of the rotating shaft, wherein a part or all of the plurality of outer peripheral plates are integrally provided on an outer surface of the outer peripheral plate. For a music box having a first outer peripheral plate having the following, and a second outer peripheral plate having the remainder not having the pin, and having a pressing member that holds both at the both ends of the rotating shaft and the outer peripheral plate . A drum for a music box, wherein the arrangement of the pins can be changed by changing the arrangement of the plurality of outer peripheral plates. 2. A music box, wherein the drum for a music box according to claim 1 is used in a playing mechanism.