JPH10149157A - Music box device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the music box device which can be adjusted its sound volume and sound quality as a music box device which plays a melody by flicking a scale plate by a rotary body. SOLUTION: The music box device has the scale plate 5 which generates a sound of a specific scale by being flicked by a rotating disk D and a diaphragm 10 which reinforces the sound transmitted from the scale plate 5. An adjusting means which can adjust the volume and quality of the sound generated by the diaphragm 10 is provided in the transmission path of the sound from the scale plate 5 between a housing 8 which holds the scale plate 5 and the diaphragm 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a music box apparatus which plays a melody by playing a musical scale by a rotating body.

[0002]

2. Description of the Related Art For each track from the inner circumference to the outer circumference, a disk having, for example, a protruding engaging portion intermittently formed in the circumferential direction is rotated, and is engaged with the engaging portion of the disk to rotate. By playing the scale with the star wheel,
2. Description of the Related Art A so-called disc music box device for playing a predetermined tune is known. Usually, the above-mentioned scale plate is held by a holding plate made of, for example, a cast member, and this holding plate is connected to a wooden diaphragm by a transmission member, for example. When the scale is played, the sound from the scale is transmitted to the diaphragm through the transmission member, and the sound is amplified by the diaphragm,
An excellent tone will be emitted.

[0003]

In the above-mentioned disc music box device, it is desired to adjust the sound volume and the sound quality more preferably depending on the acoustic conditions at the place where the disc music box device is installed, the type of music to be played, and the like. There are cases. However, in the configuration of the disc music box device as described above, the volume and sound quality of the sound to be loudspeaked are constant, and the volume and sound quality of the sound to be loudspeaked cannot be adjusted.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a music box device capable of adjusting the volume and sound quality of a music box device that plays a melody by playing a musical scale by a rotating body. And

[0005]

According to the music box device of the present invention, a musical scale plate which emits a sound of a predetermined musical scale by being played by a rotating body, and a sound generated from the musical scale plate are transmitted to amplify the sound. A music box device having a vibrating body, wherein a transmission path of the sound from the musical scale plate to the vibrating body includes an adjusting unit capable of adjusting a volume and a sound quality of a sound emitted from the vibrating body.

[0006]

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

FIGS. 1 and 2 are explanatory views showing an embodiment of a music box device according to the present invention. FIG. 1 is a sectional view, and FIG. 2 is a plan view. As shown in FIGS. 1 and 2, the music box device 1 includes a rotating shaft 2 that holds and rotates a disc D, a scale plate 5 that generates a sound of a predetermined scale by being played, and a rotating shaft 3. A freely held star wheel 4 and a holding plate 6 provided on the housing 8 for holding the musical scale plate 5 and the star wheel 4
And a vibration plate 10 provided on the bottom of the housing 8 and a transmission member 12 for connecting the housing 8 and the vibration plate 10.

The disk D is made of, for example, an aluminum disk and has an engaging portion (not shown) for engaging with the claw 4a of the star wheel 4. The engaging portion includes, for example, a plurality of projections formed intermittently in the circumferential direction for each track from the inner circumference to the outer circumference, and the projections are obtained by punching a part of the disk D.

The rotating shaft 2 holds the disk D and rotates at a predetermined speed, thereby rotating the disk D. The rotating shaft 2 is driven by a driving unit (not shown) including, for example, a motor, a gear train, and the like, and rotates at a predetermined speed by driving the motor.

The musical scale plate 5 has a predetermined number of flat teeth corresponding to the number of musical scales, and is made of, for example, a metal plate.

The star wheel 4 has a plurality of claws 4a on its outer periphery.
The star wheel 4 itself is rotated by the engagement of the pawl 4a with the engaging portion formed on the rotating disk D described above.

The holding plate 6 is formed of, for example, a cast member and directly holds the musical scale plate 5 so that the sound generated from the musical scale plate 5 is directly transmitted. The housing 8 directly holds the holding plate 6, and can be formed from, for example, a wooden plate. The sound generated from the scale plate 5 transmitted through the holding plate 6 is transmitted to the housing 8.

The diaphragm 10 is provided at the bottom of the housing 8 and can be formed of, for example, a wooden plate. The sound generated from the scale plate 5 transmitted through the transmission member 12 described below is transmitted to the diaphragm 10 and plays a role in amplifying the sound.

The transmission member 12 includes the housing 8 and the diaphragm 10
It can be formed of a soft material that is softer than, for example, a polyester elastomer or the like that can be deformed and easily transmit vibration, and has a through hole 12c for inserting the shaft member 13 therein, Both end faces 12a
And 12b are tapered. Through hole 12c
A nut 15 is fixed to one end of the shaft member 13 inserted into the shaft member 13, a butterfly nut 14 is provided at the other end, and a gap between the nut 15 and the diaphragm 10 and between the butterfly nut 14 and the housing 8 are formed. An intervening member 11 made of a soft material such as a rubber material that does not easily transmit vibration is provided between them.
The transmission member 12 is pressed by the housing 8 and the diaphragm 10 by tightening the butterfly nut 14, and both end surfaces 12 a and 12 b of the transmission member 12 and the housing 8 and the diaphragm 10
The structure is such that the contact area with the contact is increased.

In the disk music box device 1 configured as described above, when the disk D rotates, a plurality of protrusions formed intermittently in the circumferential direction for each track from the inner circumference to the outer circumference of the disk D described above. The star wheel 4 rotates by engaging with the claws 4a of the star wheel 4, respectively.
When the claw 4a of the rotating star wheel 4 flicks the comb teeth of the musical scale plate 5, a predetermined melody is played.

The sound generated from the scale plate 5 is transmitted through the holding plate 6 and the housing 8 to the diaphragm 10 through the transmitting member 12 and is amplified by the diaphragm 10 to produce an excellent tone. The nut 15 and the diaphragm 10
And between the butterfly nut 14 and the housing 8, the intervening member 11 made of a soft material is provided, so that the sound generated from the musical scale plate 5 is not transmitted to the transmission member 12 but to the shaft member 1.
3 is not transmitted.

At this time, as the contact area between the end faces 12a and 12b of the transmission member 12 and the housing 8 and the diaphragm 10 is increased by tightening the butterfly nut 14,
The amount of sound transmitted from the housing 8 to the diaphragm 10 increases. Therefore, when the amount of transmitted sound increases, the volume of the sound louder from the diaphragm 10 increases. That is, the volume of the music box device 1 can be changed and adjusted.

Since the transmission member 12 is formed of a soft material, the transmission member 12 has a lower natural frequency than the housing 8 and the diaphragm 10. For this reason, the high frequency vibration component in the housing 8 is filtered by the transmission member 12 as the contact area increases. As a result, the low frequency vibration component is transmitted to the diaphragm 10 by the transmission member 12, and the bass is emphasized. That is, the sound quality can be changed.

As described above, according to the music box device 1 of the present embodiment, the volume and sound quality of the music box device 1 can be adjusted by appropriately adjusting the amount of rotation of the butterfly nut 14.

Second Embodiment FIG. 3 is an explanatory view showing another embodiment of a music box device according to the present invention. Music box device 1 shown in FIG. 3 and FIG.
Is different from the music box device 1 shown in FIG.
2 in that a transmission member 21 is used instead of 2.

The transmission member 21 is formed such that one end 21a extends laterally, and the end surface 21 of the one end 21a is formed.
b is formed so as to be inclined with respect to the housing 8. Further, the other end surface 21c is adhered and fixed to the diaphragm 10.
A through hole for inserting the shaft member 13 is formed at one end 21a of the transmission member 21, and a nut 17 and a butterfly nut 14 are provided at both ends of the shaft member 13 inserted into the through hole. For example, an intervening member 16 made of a soft material such as a rubber material is provided therebetween. As a material for forming the transmission member 21, a wooden material can be used as in the case 8 and the diaphragm 10.

In the music box device 1 configured as described above, the contact area between the end face 21b of the transmission member 21 and the housing 8 is increased by tightening the butterfly nut 14. Therefore, the amount of sound transmitted from the housing 8 to the diaphragm 10 is increased by the same operation as the music box device 1 according to the first embodiment. As a result, the volume of the music box device 1 can be changed and adjusted.

Third Embodiment FIG. 4 is an explanatory view showing still another embodiment of a music box device according to the present invention. Music box device 1 shown in FIG.
The difference from the music box device 1 shown in FIG. 1 is that a transmission member 31 is used instead of the transmission member 12.

The transmission member 31 has both ends directly fixed to the housing 8 and the diaphragm 10. This transmission member 31
It has a structure in which the attenuation coefficient for attenuating the amplitude of the transmitted sound and the elastic coefficient for determining the frequency of the transmittable sound are independently changed. Therefore, by adjusting the above attenuation coefficient, the volume of the sound louder from the diaphragm 10 can be adjusted, and by adjusting the above elastic coefficient,
The sound quality of the sound amplified from the diaphragm 10 can be adjusted.

[0025]

As described above, according to the music box device of the present invention, the volume and sound quality of the music box device can be adjusted according to the acoustic conditions of the installation location, the type of music to be played, and the like.

[Brief description of the drawings]

FIG. 1 is a sectional view showing one embodiment of a music box device according to the present invention.

FIG. 2 is a plan view of the music box device shown in FIG.

FIG. 3 is an explanatory view showing another embodiment of a music box device according to the present invention.

FIG. 4 is an explanatory view showing still another embodiment of a music box device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Music box device 2 ... Rotating shaft 4 ... Star wheel 5 ... Scale plate 6 ... Holding plate 8 ... Housing 10 ... Diaphragm 11 ... Interposed member 12 ... Transmission member 13 ... Shaft member 14 ... Bow nut 16 ... Interposed member 21 ... Transmission member 31: Transmission member D: Disk

Claims (4)

[Claims] 1. A music box device comprising: a scale plate that emits a sound of a predetermined scale by being played by a rotating body; and a vibrator that transmits a sound generated from the scale plate and loudspeaks the sound. A music box device having an adjusting means for adjusting a volume and a sound quality of a sound emitted from the vibrating body in a transmission path of the sound from the vibrating body between the scale plate and the vibrating body. 2. The vibrating body according to claim 2, wherein said adjusting means is adapted to change a contact area between at least one of said vibrating body and a mounting member to which sound from said vibrating board is directly transmitted. 2. The music box device according to claim 1, further comprising a transmitting means for transmitting the music to the music box. 3. The adjusting means is formed of a soft material and is capable of changing a contact area between at least one of the mounting member to which sound from the musical scale plate is directly transmitted and the vibrating body. The music box device according to claim 1, further comprising a transmission unit that transmits sound from the plate to the vibrating body. 4. The adjusting means has an end portion fixed to the mounting member to which the sound from the scale plate is directly transmitted and the vibrating body, and an attenuation coefficient for attenuating the amplitude of the transmitted sound and a frequency of the transmittable sound. 2. The music box device according to claim 1, wherein the music box device comprises a transmission means having a variable elasticity coefficient for determining the value.