JP2945313B2 - Disc music box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc music box on which a disc is mounted.

[0002]

2. Description of the Related Art In general, a disc music box is a music box on which a disc-shaped disc having a large number of playing holes is mounted. The disc is rotated by a disc drive mechanism of a music box main body, while the music box is mounted on a music box main body. Is
The starwheel that plays the music box valve is rotatably mounted on the starwheel shaft. Then, when the disk is rotated by the disk drive mechanism, the playing hole of the disk hooks the claw of the star wheel corresponding to the playing hole and rotates the star wheel, and the music box valve is rotated by the other claw of the rotating star wheel. This is a music box that plays a melody.

[0003] In this disk music box, a disk having a relatively thin thickness can be used by holding a disk facing a star wheel with a disk pressing arm provided with a pressing roller, so that the disk can be manufactured at low cost. Can be formed. In addition, since the mounting and dismounting of the disk is simple, the disk can be changed in a short time, and the music can be easily changed. In this way, the disc music box is compared to the drum fixed type music box dedicated to one song,
This has the advantage that the program can be freely and easily changed by selecting a disc.

[0004]

Since each disk music box has a fixed time for rotating the disk once, it can be provided, for example, using a timer so that the drive of the disk is stopped when the disk rotates once. .
Further, it is also possible to use a one-turn detection switch in which a hole is formed at an appropriate position on the disc and the switch is turned off when a switch rod is engaged with the hole.

When the disk makes one rotation and stops, the star wheels are rotatably mounted on the star wheel shaft as described above, so that the respective star wheels are irregular at the lower portion of the disk. There is no problem when playing the next time without replacing the disk, but when replacing the disk, a newly mounted disk may cause a problem with an irregular star wheel. That is, when a disc is mounted, the performance start position of the disc is set to the star wheel, so the mounting position of the disc is generally determined. Does not exist. As described above, since the star wheels are often located separately, when the claws of any of the star wheels face the disk, the claws come into contact with the disk. The situation where the claws come into contact with the disc is remarkable when the music box is stopped halfway and the disc is replaced.

As described above, when the claws of the respective star wheels located in the radial direction with respect to the disc are non-uniformly contacting or not contacting the disc, the pressed state between the star wheel and the disc is established. Due to the pressure difference, the contact state itself becomes unbalanced. In particular, when the disk is thin, the pressed state is different depending on whether the claw is in contact with the disk or not, and in some cases, the disk is wavy. Under such a condition, there is a problem that the rotation of the disk is not smoothly performed.

Therefore, conventionally, when changing the disc, after removing the disc, the claws of the star wheel are aligned with a finger or the like, and the claws are aligned so as to contact the music box valve. is there.

However, when trying to align the claws of the star wheel with a finger or the like, the distance between the claws of the star wheel is small, so that when the claws of the star wheel are aligned,
Often, the contact with the claw of the aligned star wheel will disrupt its alignment. Especially, when in a hurry, it takes time to align the claws of the star wheel.

The present invention has been made in view of the above circumstances, and proposes an apparatus for automatically aligning the claws of a star wheel.

Also, when considering the movement of the star wheel claw described above, it is noticed that the claw moves in conjunction with the playing hole of the disc during performance. This operation is, in other words, linked to the melody.

Therefore, the present invention proposes a device capable of extracting an electric signal from the movement of a claw of a star wheel via a switch device.

[0012]

According to the first aspect of the present invention, there are provided a music box body having a disk drive mechanism and a rotatable star wheel for playing a music box valve on a star wheel shaft. When the disk-shaped disk provided is mounted and the disk is rotated by the disk drive mechanism, the playing hole hooks a claw of a star wheel corresponding to the playing hole, rotates the star wheel, and rotates. In a disc music box of a type in which a music box valve is flipped by another claw of a star wheel, an axis drive mechanism that rotationally drives a star wheel shaft on which the star wheel is mounted, a rotation control unit that controls the axis drive mechanism, A one-rotation detection switch for detecting one rotation, wherein the starwheel is rotated by rotation of the starwheel shaft. Provided so as to slip can follow rotary Te, the rotation control unit, at least the one
Rotation of the disk in response to a signal from the rotation detection switch.
Control to stop the rotation and flip the disk.
A Umono, when the disc 1 rotating signal by one rotation detection switch is sent to the rotation control unit stops the rotation of the disk by the disk drive mechanism, operated the shaft drive mechanism, A disc music box having a configuration in which the starwheel shaft is rotated for a predetermined second in a direction opposite to a rotation direction of the starwheel.

In this case, the rotation of the disk is stopped by the one-turn detection switch, and the shaft drive mechanism is operated to rotate the starwheel shaft in the direction opposite to the rotation direction of the starwheel. Because of the bias, the starwheel rotates with the rotation of the starwheel axis. Since the star wheel is provided so as to be able to slip, the star wheel rotates following the star wheel axis, and stops at that position when the pawl comes into contact with the music box valve, and thereafter slips. In this way, all star wheels are aligned so that their pawls abut the music box valve. This place
In this case, the rotation control unit includes at least the one-turn detection switch.
When the disk stops rotating in response to a signal from
Both perform the control to flip the disk, so automatically
The rotation of the disk is controlled.

The invention according to the second aspect of the present invention is directed to a disk-shaped music box body having a number of playing holes provided in a music box main body having a disk drive mechanism and a rotatable star wheel for playing a music box valve on a shaft. When the disc is mounted and the disc is rotated by the disc drive mechanism, the playing hole hooks the claw of the star wheel corresponding to the playing hole to rotate the star wheel, and the other claw of the rotating star wheel is rotated. In a disc music box of a type that plays a music box valve, a switch device is arranged along a star wheel axis on which the star wheel is mounted, and the switch device includes a switch rod facing each star wheel, and the star wheel rotates. Then, a display having a configuration in which the claw of the star wheel is provided so as to contact the switch rod is provided. It is a music box.

Therefore, the on / off of the switch in the switch device is brought about by the rotation of the star wheel by the engagement of the playing hole of the disc with the pawl of the star wheel. Then, the musical scale of the music box is electrically extracted by the difference between the individual switch rods, and the rhythm is electrically extracted by the conduction timing between the music box valve and the switch rod. Therefore, it is possible to extract an electric signal matching the melody of the music box. . As a result, by linking the electric signal to an appropriate expression means, it is possible to obtain a display, an operation, and the like linked to the melody of the music box.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings.

FIGS. 1 and 2 are external perspective views showing a disk music box according to the present invention, and FIG. 3 is an external perspective view showing a state in which the disk is removed. In these figures, the disc music box 1 of this embodiment has a music box body 2 in which a disc 3 having a large number of playing holes 4 and 4 is mounted, and the disc 3 is rotated by a disc drive mechanism 5. The playing hole 4 hooks the claw of the star wheel 12 corresponding to the playing hole, rotates the star wheel, and plays the music box valve 17a with the other claw of the rotating star wheel 12.

As shown in FIG. 4, the music box main body 2 further includes a motor M and a gear train 6 for transmitting the driving force of the motor. The motor M is driven by a main switch on operation by a power source such as a battery (not shown).

The gear train 6 is formed integrally with a plastic wheel gear 61 fixed to a motor shaft and a plastic shaft 62 orthogonal to the wheel gear 61, and a first gear 62a meshed with the wheel gear 61. , A second gear 62 formed integrally with the shaft 62 at the tip of the shaft 62
b, a third gear 63a fixed to the motor side of the star wheel shaft 7 for mounting the star wheel and meshing with the second gear 62b, and a fourth gear coaxially formed with the third gear 63a.
A gear 63 b and a gear 64 a for urging the rotation of the disk that is rotatably mounted on the base end of the shaft 15 attached to the disk holding arm 8 and meshes with the fourth gear 63 b are provided.

In the gear train 6 described above, when the motor M rotates, the driving force of the motor M increases in the order of the first from the hole gear 61.
The gear 62a, the second gear 6 rotating together with the first gear 62a
2b, a third gear 63a meshing with the second gear 62b, a third gear
It is transmitted to a fourth gear 63b that rotates together with the gear 63a,
On the one hand, the star wheel shaft 7 having the fourth gear 63b fixed to its tip rotates from the fourth gear 63b, and on the other hand, the disk rotation urging gear 64a meshing with the fourth gear 63b rotates.

The rotation of the star wheel shaft 7 causes the star wheels 12, 12 to rotate, as will be described in detail later.
Is biased to rotate, so that the claws 12a, 12b, 12c, 12
d is made to easily enter the playing hole 4 of the disc 3. Further, the rotation of the gear 64a causes the disk pressing / rotating body 64b formed integrally with the gear 64a to rotate.
Rotates with them.

The star wheel shaft 7 has a disk mounting bracket 9 screwed to the opposite side of the music box main body 2 from the motor M, and an upward substantially U-shaped screwing screwed to the music box main body 2 on the motor M side. As shown in FIG. 5, the star wheels 12, 11 are provided between the star wheel partition members 11, 11 fixedly provided at predetermined intervals.
12 is rotatably mounted. Further, a disc holding roller 13 is fixed to the star wheel shaft 7 at a position adjacent to the fourth gear 63b. The support 1
0 between the first gear 62a and the second gear 62b
Is integrally formed.

The disc holding arm 8 has a base 8
An insertion hole 1 is rotatably supported by a support member 14 provided on the music box main body 2, and an insertion hole for swallowing and engaging with a projection 91 for inserting a disk center hole of the disk mounting bracket 9 at a tip portion 82. A portion 82a is formed. Further, a groove 91a is formed at the tip of the projection 91, and correspondingly, near the insertion hole 82a,
A stopper rod 82b that engages with the groove 91a is provided by being urged to rotate. Then, the disc 3 is projected
After the disc holding arm 8 is rotated after being mounted on the disc 1, the insertion hole 82 a is fitted into the projection 91, and the stopper rod 82 b urged to rotate is engaged with the groove 91 a,
The mounting and fixing of the disk holding arm 8 and therefore the disk 3 is performed.

Further, the disc holding arm 8 is provided with a shaft 15 in its longitudinal direction, and the gear 64a and the disc pressing and rotating body 64b formed integrally therewith are rotatably mounted on the shaft 15. ing. A plurality of plastic cylinders 16a are mounted on the shaft 15. The cylindrical body 16a is integrally formed with a disk-shaped pressing roller 16b. The pressing roller 16b presses and holds the disk 3 against the star wheel when the disk pressing arm 8 presses the disk.

As described above, the disc music box 1 of this embodiment
Since the disk 3 at the portion facing the star wheels 12, 12 is held by the disk pressing arm 8 having the pressing roller 16b, a disk having a relatively thin thickness can be used.

The disk 3 has a disk outer peripheral portion and the disk pressing / rotating body 64 with the disk holding roller 13.
b, the disk is rotated with the rotation of the disk holding roller 13 and the disk pressing / rotating body 64b. Incidentally, a rubber ring 64c for preventing slip is mounted on the disk pressing and rotating body 64b.

A music box valve body 17 is provided so as to face the star wheels 12 and 12. The music box valve body 17 has music box valves 17a, 17a opposed to the star wheels 12, 12, respectively. In the case of this example, each star wheel 12, 12 is provided with four claws 12a, 12b, 12c, 12d at intervals of 90 degrees.

Then, as shown in FIG. 6, the disk 3 rotates (FIG. 6 (1)), and the playing hole 4 is
When the second claw 12a, 12b, 12c, 12d is engaged with, for example, the claw 12a (FIG. 6 (2)), the claw 12a is caught by the playing hole 4 and moves, and the star wheel 12 is forcibly rotated. Can be At this time, the claw 12b adjacent to the claw 12a of the star wheel 12 engages with the music box valve 17a (FIG. 6 (3)), and further rotates to move the music box valve 1a.
6 (4), the music box valve 17a
It is provided so as to play a unique sound.

In this embodiment, the disk drive mechanism 5 for rotating the disk 3 and the shaft drive mechanism for rotating the star wheel shaft 7 are provided by the same drive system using the motor M and the gear train 6. .

Further, the disk music box 1 of this embodiment is provided with a one-turn detection switch 21 for detecting one rotation of the disk 3 near the disk mounting bracket 9 on the music box main body 2. The one-turn detection switch 21 of this example is the same as that shown in FIG.
As shown in FIG. 5, a pin-shaped switch rod 21b which is turned upward is provided on an upper portion of the housing 21a. When the switch rod 21b is located in the horizontal direction, it is turned on, and the switch rod 21b is located upward. Is set to turn off when

On the other hand, the disc 3 has a stop hole 3a corresponding to the one-turn detection switch 21. The disc 3 makes one rotation, and the hole 3a engages with the switch rod 21b to switch the switch rod 21b. When the rotation of the motor 21b is biased upward, the one-turn detection switch 21 is turned off and the motor M of the disk drive mechanism 5 is stopped.

That is, when a demo switch (music box start switch), not shown, is turned on, about 1
The rotation energizing current flows for seconds, and the disk 3 starts rotating.
At this time, as shown in FIG. 8 (1), the switch rod 21b is on the lower surface of the disk 3 and is located in the horizontal direction, so that the switch rod 21b is turned on. . In this case, when the disc 3 is not mounted, the switch rod 21b is located at an upper position and is off, and thereafter, the motor M stops.

When the disk 3 makes one rotation, FIG.
As shown in (2), the hole 3a of the disk 3 comes to the position of the switch rod 21b, and engages with the switch rod 21b to urge the switch rod 21b to rotate upward, so that the one-turn detection switch 21 Is turned off, and the motor M of the disk drive mechanism 5 stops. As described above, when the disk 1 rotation signal is sent to the rotation control unit in response to the OFF signal of the 1 rotation detection switch 21, the control to stop the rotation of the disk 3 by the disk drive mechanism 5 is performed.

Further, in this embodiment, when the disk 1 rotation signal is sent to the rotation control unit in response to the off signal of the 1 rotation detection switch 21, the shaft drive mechanism operates after the rotation of the disk 3 is stopped. The star wheel shaft 7 is controlled to rotate for a predetermined second in a direction opposite to the rotation direction of the star wheel 12. In this example, since the shaft drive mechanism is common to the disk drive mechanism 5, the motor M is reversed for a predetermined time (0.3 seconds in this example), whereby the starwheel shaft 7 rotates the starwheel 12 It rotates for a predetermined second in the direction opposite to the direction. When the starwheel shaft 7 is reversed, the starwheel 12,
12 rotates. And the star wheels 12, 12
Is provided so as to be slippable, so that the claw 12b rotates following the star wheel shaft 7 and the music box valve 17a
When it comes into contact with, it stops at that position and then slips. In this way, all the star wheels 12 are aligned at positions where the claws 12b abut the music box valve 17a.

Accordingly, the rotation of the disk 3 is stopped by the one-turn detection switch 21, and the shaft drive mechanism is operated to urge the starwheel shaft 7 to rotate in the direction opposite to the direction of rotation of the starwheel 12. So, the star wheel 12,
12 rotates with the rotation of the starwheel shaft 7.
Then, since the star wheels 12, 12 are provided so as to be able to slip, they rotate following the star wheel shaft 7 and stop at that position when the pawl comes into contact with the music box valve 17a, and then slip. In this way, all the star wheels 12, 12 have their pawls
a.

FIG. 9 is a block diagram relating to drive control of the disc music box 1 of the present embodiment. In this example, the rotation of the disk 3 is started by sending an ON signal of an hourly contact switch of a timepiece incorporating the disk music box 1 in addition to the demonstration switch. Note that the clock component is configured such that a signal transmitted from a transmission circuit such as a crystal transmission circuit is frequency-divided to 1 Hz by a frequency dividing circuit, further transmitted to a driving circuit via a waveform shaping circuit, and a motor that operates thereby. The rotation is decelerated by the clock train, and the time is indicated by the hour and minute hands. The hour contact switch is used to turn the clock on at the hour (when the minute hand of the clock points to 12 on the dial). Then, the switch turns on the contact. Also,
In addition to the hourly contact switch, the rotation of the disk 3 may be started by a reference switch used in an alarm clock. In this case, a reference output is generated from the reference contact at a set time by the hour wheel and the reference gear of the clock train, and this is supplied to the rotation control unit to operate the motor M.

FIG. 10 shows a disk music box 1 of this embodiment in which another switch device 30 is used. The switch device 30 is provided at a position on the opposite side of the music box valve body 17 of the star wheel shaft 7 from each star wheel 1.
The contact spring 31, which is a switch rod,
31 are arranged. Each music box valve 17a and each star wheel 12 are formed of a conductive member (for example, a conductive metal), and the star wheel shaft 7 is formed of a non-conductive material. An insulating sleeve is provided and brought into an insulating state. Each of the music box valves 17a connected to the lead wires 32 and 33 and each of the contact springs 31 of the switch device 30 are configured to be conductive and nonconductive through each star wheel 12.

In other words, focusing on one star wheel 12, as shown in FIG. 11, when the playing hole 4 is not engaged with the claw of the star wheel 12 even when the disk 3 is rotating (see FIG. 11). In FIG. 11A, the music box valve 17a and the contact spring 31 are in a non-conductive state. Performance hole 4
Are the claws 12a, 12b, 12c, 1 of the star wheel 12.
Engage with, for example, a claw 12a of 2d (FIG. 11 (2))
Then, the claw 12a is caught by the playing hole 4 and moves, and the star wheel 12 is forcibly rotated as described above. At this time, the claw 12b adjacent to the claw 12a of the star wheel 12 engages with the music box valve 17a,
The other adjacent pawl 12d is engaged with the contact spring 31 (FIG. 11 (3)), and the music box valve 17a and the contact spring 31 are engaged.
The conduction between them is achieved. Further rotate and move the music box valve 1
7a (FIG. 11 (4)), the music box valve 17
When the unique sound of a is played, the claw 12 of the star wheel 12
b and music box valve 17a, and claw 12d and contact spring 3
1 are disengaged, and there is no electrical connection between them.

The on / off of the switch in the switch device 30 of the present embodiment is brought about by the engagement of the playing hole 4 of the disc 3 with the claw of the star wheel 12. As described above, the musical scale of the music box is electrically extracted by the difference between the individual contact springs 31 and the rhythm is electrically extracted by the conduction timing between the music box valve 17a and the contact spring 31, so that the rhythm of the music box matches the melody of the music box. An electric signal can be taken out. Therefore, by linking this electric signal to an appropriate expression means, it is possible to obtain a display, an operation, and the like linked to the melody of the music box.

Even if another switch device different from the above-mentioned switch device is used, an electric signal matching the melody of the music box can be taken out.

That is, as shown in FIG. 12, the switch device 30 is located at a position on the opposite side of the music box valve body 17 of the star wheel shaft 7 in correspondence with each of the star wheels 12, 12, as in the previous example. Each pair of contact springs 31 and 34 serving as switch rods is arranged and configured. In the case of this example, the switch device 30 is turned on and off by the contact and non-contact of the pair of contact springs 31 and 34.
Each music box valve 17a and each star wheel 12 as in the previous example are formed of a conductive member, and each music box valve 17a connected to the lead wires 32 and 33 and each contact spring 31 of the switch device 30 are connected to each star wheel 12a. It is not necessary to configure so that conduction and non-conduction can be achieved through.

As described in the previous example, focusing on one star wheel 12, when the playing hole 4 is not engaged with the claw of the star wheel 12 even if the disk 3 is rotating (FIG. 12 (1)). Is that the claw 12a of the star wheel 12 is located at a position where it comes into sliding contact with the disk 3, so that the other claw 12d is not in contact with the contact spring 31, and the contact springs 31 and 34
Is in a non-conductive state. Performance hole 4 is a star wheel 12
(FIG. 12 (2)), the claw 12a
Is caught in the playing hole 4 and moves, and the star wheel 12
Is forcibly rotated. At this time, the claw 12b adjacent to the claw 12a of the star wheel 12 is
a and the other adjacent claw 12d engages with the contact spring 31 (FIG. 12 (3)),
Since 1 is pressed, conduction between the contact springs 31 and 34 is achieved. When the music box valve 17a is further rotated and the music box valve 17a is flipped (FIG. 12 (4)) to produce a unique sound of the music box valve 17a, the claw 12b of the star wheel 12 and the music box valve 17a, and the claw 12d and the contact spring 31 The contact spring 31 returns to the original position, and the contact spring 3
Non-conduction is established between the terminals 1 and 34.

As described above, also in the switch device 30 of the present embodiment, an electric signal that matches the melody of the music box can be taken out. Therefore, by linking this electric signal with appropriate expression means, the melody of the music box can be obtained. It is possible to obtain linked display and operation.

[0044]

According to the first aspect of the present invention, the rotation of the disk is stopped by the one-rotation detection switch, and further, the shaft driving mechanism is operated, so that the starwheel shaft is moved in the direction of rotation of the starwheel. The rotational bias in the opposite direction causes the starwheel to rotate with the rotation of the starwheel axis. And, since the star wheel is provided so as to be able to slip, it rotates following the star wheel axis, stops at that position when the pawl comes into contact with the music box valve, and then slips. As a result, all the star wheels are The claw is aligned at a position where it comes into contact with the music box valve. Therefore, according to the present invention, it is possible to obtain a device capable of automatically aligning the claws of the star wheel without aligning the claws of the star wheel with a finger or the like. Further, in the present invention, the rotation control unit includes at least
In response to a signal from the one-turn detection switch,
Stop the disk rotation and flip the disk
Controls the disk rotation automatically.
It can be.

According to the second aspect of the present invention, the on / off of the switch in the switch device is brought about by the rotation of the star wheel by engaging the playing hole of the disc with the claw of the star wheel. The scale of the music box is electrically extracted by the difference between the individual switch rods, and the rhythm is electrically extracted by the timing of conduction between the music box valve and the switch rod.Therefore, it is possible to extract an electric signal that matches the melody of the music box. it can. As a result, by linking the electric signal to an appropriate expression means, it is possible to obtain a display, an operation, and the like linked to the melody of the music box.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing a disc music box according to the present invention.

FIG. 2 is an external perspective view showing a disc music box according to the present invention.

FIG. 3 is a perspective view showing the appearance of a disc music box according to the present invention with the disc removed.

FIG. 4 is a perspective view showing a gear train used for a disc music box.

FIG. 5 is a partially broken perspective view showing around a star wheel axis on which a star wheel is mounted.

FIG. 6 is a diagram showing an engagement state between a star wheel, a disk, and a music box valve.

FIG. 7 is a diagram showing a one-turn detection switch.

FIG. 8 is a diagram showing an engagement state between a one-turn detection switch and a disk.

FIG. 9 is a drive control block diagram of the disc music box according to the present invention.

FIG. 10 is an external perspective view of a state in which another switch device is used for a disc music box.

FIG. 11 is a diagram showing an engagement state between a star wheel, a disc, a music box valve, and a contact spring.

FIG. 12 is a diagram showing an engagement state between a star wheel, a disc, a music box valve, and a contact spring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc music box 2 Music box main body 3 Disc 3a Stop hole 4 Play hole 5 Disc drive mechanism 6 Gear train 7 Star wheel shaft 8 Disc holding arm 9 Disc mounting bracket 10 Support material 11 Star wheel partition member 12 Star wheel 12a Claw 12b Claw 12c Claw 12d Claw 13 Disk clamping roller 14 Supporting member 15 Shaft 16a Cylindrical body 16b Pressing roller 17 Music box valve body 17a Music box valve 21 1 rotation detection switch 21a Housing 21b Switch rod 21b 30 Switch device 31 Contact spring 32 Lead wire 33 Lead Line 34 Contact spring 61 Wheel gear 62 Shaft 62a First gear 62b Second gear 63a Third gear 63b Fourth gear 64a Gear 64b Disk pushing / rotating body 81 Base 82 Tip 82a Insert hole 9 Projections 91a groove M motor

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G10F 1/00-5/06

Claims (2)

(57) [Claims] 1. A disk-shaped disk provided with a large number of playing holes is mounted on a music box main body having a disk drive mechanism and rotatably mounted with a star wheel for playing a music box valve on a shaft. When the disc is rotated, the playing hole hooks a claw of a star wheel corresponding to the playing hole to rotate the star wheel, and the other claw of the rotating star wheel is used to play a music box valve. In the above, there is provided a shaft drive mechanism for rotating and driving a star wheel shaft on which the star wheel is mounted, a rotation control unit for controlling the shaft drive mechanism, and a single rotation detection switch for detecting one rotation of the disk, star wheel is provided so as to slip can follow rotates with the rotation of the star wheel shaft, said rotating Control unit, at least the one rotation detection switch
When the disk stops rotating in response to a signal from
Both of them perform control to flip the disk.
Te, when the disk 1 rotated signal by one rotation detection switch is sent to the rotation control unit stops the rotation of the disk by the disk drive mechanism, operated the shaft drive mechanism, the star wheel shaft Characterized in that the disc music box is rotated for a predetermined second in a direction opposite to a rotation direction of the star wheel. 2. A disk-shaped disk having a large number of playing holes is mounted on a music box body having a disk drive mechanism and rotatably mounted on a shaft a star wheel for flipping a music box valve. When the disc is rotated, the playing hole hooks a claw of a star wheel corresponding to the playing hole to rotate the star wheel, and the other claw of the rotating star wheel is used to play a music box valve. In the above, a switch device is arranged along a starwheel axis on which the starwheel is mounted, the switch device includes a switch rod facing each starwheel, and when the starwheel rotates, the claw of the starwheel is turned on by the switch. A disc music box provided so as to be in contact with a rod.