JP2001034262A - Music box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a music box which derives sounds of better echoes and better quality and is compact. SOLUTION: The music box 10 consists of a casing 16 and a sound producing mechanism 12 placed thereon. The casing 16 consists of a soundboard 20, side plates 22 and a bottom plate 24. The soundboard 20 is supported at the top ends of the side plates 22. The bottom plate 24 is mounted at the bottom ends of the side plates 22. The sound producing mechanism 12 is placed in the central part of the front surface of the soundboard 20. The casing 16 further has a supporting plate 32 interposed between the soundboard 20 and the bottom plate 24. The top end of the supporting plate 32 supports the rear surface of the soundboard 20 so as to hold the soundboard 20 between itself and the sound producing mechanism 12. The bottom plate 24 is mounted at the bottom end of the supporting plate 32 as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a music box.

[0002]

2. Description of the Related Art A music box called a disk music box is for rotating a music box disk having a large number of projections on its lower surface and enjoying a sound produced when a comb-like member arranged below the disk engages with the projections. .

In a conventional disc music box, the sound generating mechanism having the above comb-like member is housed in a box, and the box is provided with a one-sided lid. At the time of performance, the lid of the box is opened, and a disk in which a desired music is incorporated is mounted on the sound generating mechanism inside the box. The disk rotates under the force of a mainspring or an electric motor. When the disk rotates, a number of protrusions provided on the lower surface of the disk engage and repel comb teeth of the comb members having different lengths. As a result, sounds with different scales are generated,
Play a song. The sound is transmitted from the bottom plate of the box where the sound generating mechanism is arranged and fixed, to the object in which the box is placed, and also to the side plate of the box, and reaches the user's ear through the vibration of air.

[0004]

In a conventional music box, a sound generating mechanism is fixedly arranged on a bottom plate inside a box, that is, in a space surrounded by a side plate of the box. However, in such an arrangement, when sound transmission by the box itself is considered, only sound is transmitted from the bottom plate on which the sound generating mechanism is installed to the side plate. In this case, the delicate tone of the music box cannot be sounded sufficiently. Further, the sound emitted from the comb-like member under the disk is blocked by the side plate, and is prevented from spreading to the surrounding space. This is also a factor that makes it impossible to extract good sound.
In addition, the box must be larger than the diameter of the disk to mount the disk inside.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a compact music box which has a better sounding sound than before and can produce good quality sound.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a sound generating mechanism which detachably mounts a sound generating medium and engages with the sound generating medium to generate a sound, and supports the sound generating mechanism. A disk music box having a housing, a housing, a plurality of side plates, a sound board mounted on the upper surface of the sound plate and mounted near the upper end of the side plate, and a bottom plate mounted near the lower end of the side plate. , And at least one support plate attached between the soundboard and the bottom plate.

[0007] The height of the side plate and the support plate of the housing is preferably set so that the support plate receives a compressive force between the soundboard and the bottom plate. The housing further includes a double-leafed lid rotatably attached to the upper end of the housing, which covers the soundboard and the sounding mechanism when closed, and substantially entirely when opened. Preferably, it is located below the sound generating mechanism.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a music box 10 according to an embodiment of the present invention
And a housing 16 with a lid 14 on which the sound generating mechanism 12 is mounted and stored. The sounding mechanism 12 can detachably mount a music box disk 18 (see broken lines in FIGS. 3 and 4), and engages with a plurality of projections (not shown) provided on the lower surface of the disk 18 when the disk 18 rotates. A comb-shaped member (not shown) that emits sound. The plurality of comb teeth of the comb-like member have different lengths, and emit different scales of sounds by being hit by the protrusions of the disc. The rotation of the disk 18 is performed by receiving a force from a mainspring or an electric motor (not shown).

As shown in detail in FIG. 3 and FIG.
6 mainly includes an upper horizontal sound board 20, four side plates 22 surrounding four sides, and a lower bottom plate 24. Lid 14
Are hinged to the upper ends of a pair of side plates 22 facing each other.
6, a pair of doors 14a rotatably mounted by
14b. These doors 14a, 14b
When it is closed as shown in FIG. 1, it has a so-called double door structure. When it is closed, the sound board 20 and the sound generating mechanism 12 mounted at the center of the upper surface thereof are covered and hidden, and as shown in FIG. When it is opened by being rotated 180 degrees from the opening, substantially the entirety is positioned below the sound generating mechanism 12. Therefore,
The lid 14 in the fully opened state does not hinder acoustically or physically. That is, the sound emitted from the sound generating mechanism 12 can spread in the horizontal direction without being hindered by the doors 14a and 14b of the fully opened lid 14, and unnecessary reflection does not occur. In addition, this configuration makes it possible to mount a disk having a diameter larger than the lateral dimension of the housing 16 on the sound generating mechanism 12. Therefore, the lateral dimension of the housing 16 can be made smaller than the diameter of the disk, and the housing 16 can be made more compact than the conventional one (see FIG. 3). The double doors 14a and 14b are advantageous as compared with the single doors because the weight balance of the housing 16 is not lost when the doors 14a and 14b are opened right and left. The fact that less space is required when opening the lid is also an advantage over single doors.

[0010] Each member constituting the housing 16 is preferably made of a solid precious wood used for musical instruments. This is to make a good sound. Further, as the paint, it is preferable to use ceramics used for musical instruments such as a violin, in particular, edible ceramics that are well purified.
This is because the color of the wood itself can be brought out and the beauty can be highlighted.

The four edges of the soundboard 20 of the housing 16 are fitted into grooves 30 extending along the vicinity of the upper end of the inner surface of the side plate 22. Thereby, the soundboard 20 is supported by the side plate 22. In the illustrated embodiment, the soundboard 20 is a plate having a uniform thickness. However, in consideration of the acoustic effect, the thickness of the soundboard 20 may be increased from the edge to the center on the lower surface thereof. The four side plates 22 can be combined with each other by using a technique such as joining, for example, without using nails or an adhesive.

On the lower surface of the soundboard 20, two substantially T-shaped support plates 32 are mounted separately from each other. These support plates 32 also form part of the housing 16. A plurality of bolts 36 extend through the flange portion 34 of the support plate 32, the sound board 20, and the flange portion projecting laterally from the lower surface of the sound generating mechanism 12, and these three members are integrally fastened. Thus, the support plate 32 supports the lower surface of the soundboard 20 so as to sandwich the soundboard 20 between the upper surface thereof and the sound generating mechanism 12. The bottom plate 24 is attached to the lower end of the side plate 22 with bolts or the like. The support plate 32 is attached to the bottom plate 24 by bolts 40 that extend upward through the bottom plate 24.

An elongated auxiliary wood piece 42 is used for fastening the side plate 22 and the bottom plate 24. The wooden piece 42 has an elongated shape, and is fixed to a corner inside the frame formed by the four side plates 22 with bolts (not shown).
Part 2 The upper end of the wood piece 42 can be at a position where it comes into contact with the lower surface of the soundboard 20, that is, at a position that is flush with the lower surface of the groove 30 of the side plate 22. Piece of wood 42
A vertical screw hole is formed at the lower end of the. The size of the bottom plate 24 is just enough to fit inside the frame made of the side plate 22. The bottom plate 24 is attached to the lower end of the side plate 22 by screwing a bolt 44 extending upward through the bottom plate 24 into a screw hole of the wooden piece 42.

The vertical length of the piece of wood 42 is
Is slightly shorter than the length in the vertical direction. In other words, the lower end position of the piece of wood 42 is slightly higher than the lower end position of the support plate 32. By doing so, when the bolt 44 at the lower end of the wooden piece 42 is tightened, the support plate 3
2 will receive a compressive force between the soundboard 20 and the bottom plate 24. Therefore, the bolt 40 and the bolt 44 are renewed.
By tightening, the sound generating mechanism 12, the sound board 20, the support plate 32, the side plate 22, and the bottom plate 24 are integrated and tightly connected to each other. This is very advantageous for obtaining a good sound.

By the way, the sound generating mechanism 12 mounted on the center of the upper surface of the sound board 20 may be placed on the sound board 20 via frames (spacers) attached to the four corners on the lower surface of the substrate.

When the music is played with the disk 18 mounted on the sound generating mechanism 12, the sound emitted from the comb-like member is transmitted from the sound board 20 tightly connected to the bottom board 2 via the side plate 22.
4, and from the soundboard 20 to the bottom plate 24 via the support plate 32, so that the entire housing 16 can sound. In addition, the housing 16 serves as a resonance box, so that bass can be sounded sufficiently despite its compact size.

Further, since the sound generating mechanism 12 is mounted on the sound board 20 on the upper part of the housing 16, the sound is not obstructed to the surroundings. Also, although the lid 14 is provided,
Since the doors 14a and 14b are positioned below the sound generating mechanism 12 when opened, they do not hinder the spread of sound and do not cause unnecessary reflection. The open lid 14
Rather, it plays a role in expanding the transmission of sound from the side plate 22.

[0018]

In the music box of the present invention, the sound emitted from the sound generator is transmitted from the soundboard to the bottom plate via the side plate, and also transmitted from the soundboard to the bottom plate via the support plate. The sounding mechanism is mounted on a resonance box. As a result, the entire housing can be resonated, and bass can be sufficiently heard even with a compact size. Therefore, the delicate tone of the music box can be fully enjoyed.

Further, since the sound generating mechanism is located above the side plate, the sound from the comb-shaped member of the sound generating mechanism can spread to the surrounding space without being interrupted by the side plate, so that a good quality sound can be obtained. be able to.

Further, since there is no physical obstruction around the sound generating mechanism in the lateral direction, it is possible to play a disk having a diameter exceeding the lateral dimension of the housing. The music box can be made compact with respect to the diameter of the disc.

Even when a double-leafed lid is provided, the above effect is not lost, but rather, the lid plays a role of expanding sound transmission. In the above embodiment, the music box disc is used as the sound medium. However, if the sound mechanism is slightly changed in design, a tape-type or book-type sound medium can be used in the present invention.

[Brief description of the drawings]

FIG. 1 is a perspective view of a music box according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a cover of the music box shown in FIG. 1 is opened.

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

FIG. 4 is a sectional view taken along line VI-VI of FIG. 2;

[Explanation of symbols]

 Reference Signs List 12 sound generating mechanism 14 lid 14a, 14b door 16 housing 20 soundboard 22 side plate 24 bottom plate 26 hinge 30 groove 32 support plate

Claims (5)

[Claims] 1. A disk music box having a sound generating mechanism for detachably mounting a sound medium and engaging with the sound medium to emit a sound, and a housing for supporting the sound generating mechanism, wherein the housing is A plurality of side plates, a sound board mounted near the upper end of the side plate and mounting the sound generating mechanism on the upper surface,
A music box comprising: a bottom plate attached near a lower end of the side plate; and at least one support plate attached between the soundboard and the bottom plate. 2. The music box according to claim 1, wherein the heights of the side plate and the support plate are set such that the support plate receives a compressive force between the soundboard and the bottom plate. 3. The sound-producing medium is a music box disc, and the sound-producing mechanism mounts the music box disc removably and engages a projection provided on a lower surface of the disc when the disc rotates to generate a sound. The music box according to claim 1, further comprising a shape member. 4. The apparatus further comprises a double door which is rotatably attached to an upper end of the housing, and covers the soundboard and the sound generating mechanism when the lid is closed, and substantially when opened. 2. The method according to claim 1, wherein the whole is positioned below the sound generating mechanism.
4. The music box according to any one of claims 3 to 3. 5. The music box according to claim 1, wherein said support plate comprises a plurality of plates, and is substantially T-shaped.