JPH11109962A - Music box disk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to recognize whether the programs stated in the engaging parts for playing on the surface of a program display label coincide with the programs displayed on this program display label or not at a glance by providing the sections corresponding to the engaging part with the earmarks. SOLUTION: The program display label 5 stated with the programs is affixed to the central part on the surface of a disk 1 in order to display the programs indicated by the engaging parts 3 of the disk 1. The earmarks 5B are displayed on the program display label 5 in the positions proximate to the engaging parts 3A existing on the tracks shortest from a mounting hole 2 among the plural engaging parts 3 for playing. The mounting hole 2 and driving hole 4 for rotational driving formed at the disk 1 and the hole 5a and positioning hole 5A formed at the program display label 5 are made respectively correspondent to each other, by which the program display label 5 is positioned to the prescribed position with respect to the disk 1. Next, whether the earmarks 5B displayed on the program display label 5 exist in the positions proximate to the engaging parts 3A or not is visually checked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art In general, the sound generating means used for notifying a clock or the like is not limited to a means for obtaining an inorganic electronic sound by using a sound generating circuit and a speaker, but also a soft and old-fashioned sound using a mechanical music box. There is a known music box sound.

[0003] Such a music box generally plays a single piece of music in a music box. A long plate-shaped sounding body provided with a plurality of sounding portions corresponding to the pitches, and a sounding body arranged opposite to the sounding body. The drum unit is provided with a projection that protrudes a sounding portion of the sounding body at a predetermined performance timing, and a drive unit that rotates the drum body at a constant speed.

That is, in this sounding body, a substantially long plate-like metal plate is formed into a comb-like shape as a predetermined number of sound-producing portions in accordance with the number of musical scales. The music box valve is formed to have a length and thickness, and when the tip of the music box valve is flicked, a music box sound of a shared scale is generated. Further, the drum body is formed in a cylindrical shape that is at least longer than the sounding body, is rotatably arranged to face the sounding part of the sounding body, and has an intermittent outer periphery corresponding to the sounding portion of the sounding body according to the music. Projections are formed. Then, the drive unit drives the drum body in a fixed direction at a predetermined speed, so that each projection of the drum body at a predetermined timing plucks each sounding part of the sounding body, thereby playing the music box for the music. I have.

There is also known a music box in which a plurality of music box discs on which different music pieces are recorded are exchangeable in place of such a pre-installed drum body so that any music piece can be played in a music box. ing.

The music box disc is formed in a disk shape, and one surface of the music box disc is divided into a plurality of tracks corresponding to a music box valve of a sounding body, and circumferential portions corresponding to performance timings of musical scales shared by the tracks. The music engagement portions are formed by protrusions and holes of a predetermined diameter provided at predetermined locations of the music box disc. Then, by using such a performance engaging portion, a music box performance is performed by plucking a predetermined portion of the sounding body.

That is, a music box using this music box disc is for playing a music box by mounting a disc-shaped music box disc having a large number of engagement portions for performance, and the music box disc is a drive mechanism for a music box body. On the other hand, a star wheel for playing a music box valve of a sounding body is rotatably mounted on a star wheel shaft in the music box body. Then, when the music box disc is rotated by the driving mechanism, the playing engagement portion of the music box disc catches the claw of the star wheel corresponding to the playing engagement portion, rotates the star wheel, and rotates the star wheel. By using the other subsequent claws, a music box sound of a predetermined musical scale is played at a predetermined timing to generate a music box sound, and a melody can be played.

In addition, the music box having a relatively small thickness is provided by holding a music box disc facing a star wheel by pressing the music box disc from one side with a music box disc holding arm provided with a holding roller. Discs can be used. Therefore, music box discs with different music patterns are
Many can be produced at low cost, and since the music box disc itself is a thin disk, it can be easily stored and stored, can be transported efficiently, and can be efficiently transported, just like CD-sized media. Can be achieved.

Furthermore, since the music box disc itself is easy to handle, it can be easily attached to and detached from the music box, and the music box disc can be replaced in a short time. Therefore, a plurality of music box discs of different music pieces are prepared in advance, and an arbitrary music piece is selected from these music box discs and the music box disc is exchanged, whereby the music piece to be played in the music box can be changed quickly and easily. it can.

[0010] As described above, the disc music box can be easily mounted by selecting an arbitrary music box disc from a plurality of music box discs, as compared to a drum-fixed type music box dedicated to one music piece. It has the advantage that can be done.

[0011] In addition, in the center of such a music box disc, a music piece display label for displaying the music piece of the music box disc is attached, and the user can easily recognize the music piece of the music box disc by using this music piece label. can do.

[0012]

In such a music box disc, the music piece written in the engaging portion of the music box disc must match the music piece displayed on the music piece label. Therefore, when sticking a song display label on the surface of the disc, it is necessary to strictly manage the sticker so as not to stick a song indicator label different from the song written in the engaging portion of the disc.

Accordingly, the present invention has been made in view of such a conventional problem, and it is determined whether or not a music piece written on an engagement portion of a music box disc during a sticking operation matches a music piece displayed on a music piece display label. It is to provide a structure of a music box disc which can be recognized at a glance.

[0014]

In order to solve the above-mentioned problems, there is provided a performance engaging portion formed by a convex portion or a hole for performance.
In a music box disc having a music display label attached at a predetermined position, a mark is provided on a surface of the music display label at a portion corresponding to the engagement portion for performance.

That is, when a music piece label is attached to the surface of a music box disc,
Since the mark is provided at a portion corresponding to the playing engagement portion, it is confirmed whether or not the playing engagement portion exists near the location where the mark is present, so that the music box disc is marked with the engagement portion. At a glance, it is possible to recognize at a glance whether or not the tune to be played matches the tune displayed on the tune display label.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a disc music box apparatus for mounting a music box disc according to the present invention will be described below with reference to FIGS.

As shown in FIGS. 1 and 2, the disc music box 20 of the present embodiment plays a music box using a music box disc 1 (hereinafter referred to as a disc 1) which can be easily and quickly changed. is there.

The disc 1 used in the disc music box 20 of this embodiment is formed in a disk shape having a predetermined rigidity using a light metal such as stainless steel, and has a plurality of playing engagement portions corresponding to a curved pattern on the back surface thereof. 3 are provided.
Further, as shown in FIG. 3, the disc 1 is provided with a circular mounting hole 2 having a predetermined inner diameter at the center thereof, and in the vicinity of the mounting hole 2 and at an angular position corresponding to the playing pattern,
A drive hole 4 used for disk rotation drive control is provided. The disk rotation drive control performed using the drive holes 4 will be described later.

The back surface of the disc 1 is divided into a plurality of tracks in a radial direction corresponding to a music box valve 27a of a music box sounding body 27 of the music box 20, which will be described later. Are formed in the circumferential direction corresponding to the above, and a predetermined performance pattern is constituted by the performance engagement portions 3, 3.

In the present embodiment, the engagement portions 3 and 3 for use in the present embodiment are of a projection type. The projections 6 are formed by cutting and raising corresponding portions of the metal disc 1.
The projection 6 is used as the engaging portion drive 2 for sound generation operation. That is, the cut 6a is formed in a substantially rectangular U-shape (FIG. 4 (1)), and the cut 6a is pressed to form a cut-and-raised portion 6b (FIG. 4 (2)). Is bent in the middle to form a projection 6 projecting from the back surface of the disc 1 at a predetermined height (FIG. 4 (3)). In addition, such engaging parts for performance 3 and 3 are moved from the inner peripheral side to the outer peripheral side of the disc 1 by an automatic processing machine.
It is formed sequentially. Therefore, since the playing engagement portions 3 and 3 are formed as described above, a large number of disks 1 can be easily manufactured with a simple manufacturing jig and a simple manufacturing process.

A disc music box 20 using such a disc 1 is rotatable around a base 21 formed in a predetermined plane shape using a substantially flat plate material and a center shaft 22 erected on the base 21. A turn plate 23 loosely fitted on the turn plate 23, a holding arm 25 for detachably holding the disc 1 on the turn plate 23, and a turn plate 23.
A drive mechanism 24 for rotating the disk 1 at a constant speed, and the playing engagement portions 3 and 3 of the disk 1 which are rotated and driven along with the turn plate 23, correspond to the respective star wheels 2.
And a music box sounding body 27 which is driven to sound through the sound box 6.

That is, the base 21 is made of a material having high rigidity and strength, and is formed at least longer than the radius of the disk 1. A turn plate 23 for holding the disk 1 is provided upright at one end in the longitudinal direction. A motor M of a driving mechanism 24 is disposed at the other end, and a driving mechanism for reducing and transmitting the motor rotation driving force to the turn plate 23 during music box performance, while the other end is provided with a motor M at the other end. 24 transmission shafts and gears are arranged. A screw hole for attaching the disc music box 20 to a main body case such as a timepiece is provided at a predetermined position of the base table 21.

The turn plate 23 is mounted on the base 21
The turn plate 23 is loosely fitted to a metal center shaft 22 erected at the end thereof, and an E-ring is fitted to the tip end side of the turn plate 23 to prevent the turn plate 23 from coming off.

The turn plate 23 is formed in a thick disk shape by using a rigid resin.
An outer mounting portion 23a corresponding to the inner diameter of the disk 1 is provided, a supporting portion 23b having a larger diameter than the mounting portion 23a and supporting the lower surface of the disk 1 is provided in the middle, and a driving mechanism A gear portion 23c meshed with the output gear is provided, and a drive projection 23d is provided on the turn plate 23 at a position corresponding to the drive hole 4 of the disk 1.
Is protruding. In the drawing, reference numeral 29 denotes a support member which supports the lower surface on the outer peripheral side of the disk 1 and stabilizes the disk 1.

Further, the turn plate 23 includes the drive mechanism 2
The drive mechanism 24 drives the turn plate 23 to rotate at a constant speed in a constant rotation direction during music box performance.

As shown in FIG. 5, the driving mechanism 24
A motor M positioned outside the disk 1 when the disk 1 is mounted on the turn plate 23, and a first motor M for transmitting the motor rotation output to the turn plate 23 while reducing the speed.
It comprises an input gear 32, a transmission shaft 33, a first output gear 34, and a second gear 35. Hereinafter, each part will be described in detail.

As the motor M, a DC motor is used, and its motor shaft is provided outside the disk 1 in parallel with the plane of the base table 21 and perpendicular to the longitudinal direction of the holding arm 25. It is fixed to. Therefore, the motor M
Can be stably held on the flat surface of the base 21 and the thickness of the disc music box 20 can be reduced to a height almost equal to the motor diameter, so that the thickness can be reduced.

The connection terminal of the motor M is connected to a motor drive circuit (not shown), and is operated by a drive current supplied from the motor drive circuit. The motor M is set so as not to be operated by the safety switch mechanism 37 when the holding arm 25 is unlocked, as described later.

A worm gear 31 is provided on the output shaft of the motor M.
The first input gear 32 meshes with the worm gear 31. The first input gear 32 is fixed to one end of a transmission shaft 33 that is orthogonal to the longitudinal direction of the motor output shaft and that is supported in parallel with the starwheel shaft 26A. The first output gear 34 is fixed. The first output gear 34 includes a second gear 35
The output gear 35b formed integrally with the second gear 35 is meshed with the input gear 35a of the turn gear 23.
Is meshed with a gear portion 23c formed integrally with the base end of the gear.

The second gear 35 is integrally provided with an input gear 35a and an output gear 35b having rotating surfaces orthogonal to each other, and the input gear 35a extends along the outer peripheral edge of the substantially circular plate in the axial direction. , And a tooth portion is formed by engraving on the protruded end face, and meshes with the first output gear 34. The output gear portion 35b of the second gear 35
Is formed coaxially with the input gear portion 35 a and formed on the inner periphery thereof in the form of external teeth having a predetermined outer diameter, and meshes with a gear portion 23 c formed integrally with the base end of the turn plate 23. Therefore, the first
The rotation of the input / output gear is transmitted while being reduced to a turn plate 23 provided on the base table 21 in a direction orthogonal to the rotation axis.

Further, each of the gears 3 meshing with each other
A predetermined reduction ratio is set between 1, 32, 34, 35a, 35b, and 23c.

Accordingly, the rotational driving force of the motor M is transmitted to the turn plate 23 while being reduced to a predetermined speed by the drive mechanism 24, and the disk 1 on which the turn plate 23 is mounted is rotated at a predetermined rotational speed. You.

As shown in FIGS. 1 and 2 again, the holding arm 25 is formed in a substantially rectangular shape longer than at least the radial length of the disk 1, and its base end is pivotally supported by the base 21. A roller 25a is provided which is configured to be engageable and lockable with a center shaft 22 having a front end erected on the base stand 21 and presses the mounted disc 1 against a star wheel 26 on the base stand 21 while rotating. .

That is, the holding arm 2 at the end of the center shaft 22
5 is provided with a notch portion 22a, and a corresponding shape of the holding arm 25 is provided with a lock arm 25b having a predetermined shape in accordance with the notch portion 22a. Is biased by a spring so that its tip engages with the notch 22a.

Therefore, unless the user performs an operation of releasing the engagement of the lock arm 25b, the disc 1 is securely mounted and held on the music box 20, and the disc 1 is securely held.
Regardless of its own posture, the disc 1 is stably held so that a music box performance can be performed. On the other hand, the disc 1 can be quickly and easily replaced by releasing the lock of the holding arm 25 and swinging the holding arm 25 to stand up.

Further, in this embodiment, a safety switch mechanism 37 for checking whether or not the holding arm 25 is locked is provided.

That is, as shown in FIG. 2, the safety switch mechanism 37 has a projection 38 provided at a position outside the disk 1 of the holding arm 25 and opposed to the direction of the disk 1 and a corresponding portion. And a micro switch 39 having a flip-up switch lever 39a provided at a predetermined position on the base 21.
9 is electrically connected in series to a signal line for transmitting a start signal for starting music box performance.

The microswitch 39 is fixed to the base 21 in correspondence with the projection 38, and a general flip-up switch lever 39a is provided on the upper portion thereof.
The base has an electrical switch connection terminal.

That is, the switch lever 39a is
It is urged by a spring or the like so as to rise upward, and when it rises, it is electrically turned off as a switch, and it is turned on when the switch lever 39a is tilted down. Is configured.

In FIGS. 1 and 2, a music box sounding body 27 for sounding a music box is formed in a rectangular shape using a metal material, and is disposed on a base 21 so as to be parallel to the disc 1. The tip of one end side of the music box sounding body 27 has a comb-shaped music box valve portion 27.
a is provided, and the base end on the other end side is fixed to the pedestal portion provided with the base 21 so that the end on the music box valve portion 27a side is aligned in the radial direction of the disc 1 corresponding to the holding arm 25. ing. In addition, these music box valve portions 27
The a and 27a are provided in a predetermined number corresponding to the number of tones to be pronounced, each having a predetermined thickness and length corresponding to the scale, and when the tips of the music box valve portions 27a and 27a are flipped. , A music box sound of a predetermined scale / interval.

A plurality of star wheels 26 corresponding to the number of scale tracks of the disk 1 are rotatably supported by a star wheel shaft 26A at a position on the lower surface side of the disk 1 corresponding to the holding arm 25. .

The star wheel 26 is provided with eight pawls so that it can engage with the engaging protrusions of the disk 1 at any rotational position. The rear side is formed on a surface orthogonal to the rotational direction, and is provided to ensure engagement with the engaging projection of the disk 1.

Therefore, as compared with the performance-engaging portions of the type provided with holes (see, for example, JP-A-9-152864 and JP-A-9-152864), the claws of all the star wheels are aligned. This eliminates the need for the aligning operation and the rotational biasing of the star wheel in the rotational direction so as to reliably engage with the holes, thereby simplifying the configuration.

Further, at a position of the base 21 facing each star wheel 26, a separation member having a same width as the star wheels 26 and a predetermined width is provided by using a synthetic resin capable of reducing friction. Each star wheel 26 is held at a predetermined interval along the longitudinal direction of the star wheel axis. Therefore, each star wheel 26 can be rotatably maintained at a position always facing the music box valve portion 27a of the corresponding music box sounding body 27.

Then, the user mounts the disc 1 arbitrarily selected on the base table 21 and outputs a start signal at a normal time from a control circuit (not shown) or a monitor switch (not shown). , When the user turns on,
The disk 1 is driven to rotate by the drive mechanism 24, and the music box valve portion 27a corresponding to the musical scale of the musical piece is nail-flicked by the claw portion 26a of the star wheel 26 at a predetermined timing, so that the music box performance is performed.

That is, the projections of the playing engagement portions 3, 3 of the disk 1 hook the claw portions 26a of the star wheel 26 corresponding to the playing engagement portions 3, 3, thereby forcing the star wheel 26. The music box valve 27a is finally flipped by another claw 26a following the rotating star wheel 26, and a music box sound is generated.

As shown in FIG. 6, the disk 1 is driven to rotate (FIG. 6 (1)), and the engagement members 3 for playing engage with the claw portions 26a of the claw portions 26a of the star wheel 26, for example. When this is done (FIG. 6 (2)), the claw portion 26a is forcibly moved by the projections 6 of the playing engagement portions 3 and 3, and the star wheel 26 is rotated. At this time, the star wheel 2
The pawl 26a following the pawl 26a of No. 6 comes into contact with the music box valve 27a (FIG. 6 (3)), and further rotates and pawls the music box valve 27a (FIG. 6 (4)). Then, a music box sound of a unique scale of the music box valve portion 27a is generated.

Further, in this embodiment, an auto-stop mechanism 41 is provided for automatically stopping the music box performance by one rotation of the disc 1 for playing one piece of music so that the music box can be used in a mechanism clock or the like. (See Fig. 1)

The automatic stop mechanism 41 comprises a notch 42 for detection provided on the turn plate 23 and a micro switch 43 for detection provided at a predetermined position on the base 21.

In order to enable the auto switch mechanism 41, positioning holes 44 and 45 for positioning the rotation position of the turn plate 23 at one rotation detection position by the micro switch 43 and incorporating the same are provided on the base table. 21 and the turn plate 23.

That is, the drive hole 4 of the disk 1 is engaged with the drive projection 23 d provided on the turn plate 23, and the disk 1 is mounted on the turn plate 23. The disc 1 is mounted at the same rotational angle position. Therefore, the performance start position of the disc 1 mounted on the turn plate 23 with respect to the base stand is always constant, and even if the relative position between them is slightly deviated, the music box performance cannot be started and ended accurately.

In other words, when the turn plate 23 is driven to rotate and the notch 42 of the turn plate 23 reaches the position detected by the microswitch 43, the rotation of the disk 1 whose rotation is restricted by the drive projection 23d of the turn plate 23 is performed. The position must always be the performance end position (hereinafter referred to as a rotation reference position).

That is, as shown in FIGS. 1 and 2 again, the automatic stop mechanism 41
3 is provided on the outer periphery of the support portion 23b at a predetermined length in the circumferential direction, and the microswitch 43 provided at a predetermined position of the base table 21 which is a disk music box fixing side member. By incorporating the turn plate 23 while engaging the pins with the positioning holes 44 and 45 provided on the table 21 and the turn plate 23, the turn plate 23 can be provided at an appropriate rotation reference position.

The position where the microswitch 43 is installed and the position where the notch 42 is provided are determined by the turn plate 2.
3, the rotation position of the disk 1 by the drive projection 23d is set to the start or performance end position when the drive projection 23d is vertically aligned with each other.

The distance between the microswitch 43 and the lower surface of the support portion 23b of the turn plate 23 is shorter than the total length of the switch lever 43a.
The distance is set to a distance that abuts against the lower surface of the support portion 23b and falls down. Further, the micro switch 43 operates in a reverse direction to the normal operation, and when the switch lever 43a is tilted,
An off signal is output, and an on signal is output when the switch lever 43a stands up. However, the present invention is not limited to this, and the microswitch
3 may be used via a reversing circuit.

Further, the support portion 23b of the turn plate 23
The notch 42 provided at a position on the outer periphery of the support portion 23b and at a position that satisfies the above-described conditions is formed to have a predetermined length in the circumferential direction to ensure detection.

Therefore, when playing the music box, the turn plate 23, that is, the disc 1 is driven to rotate and reaches a reference rotation position at which the performance is completed by one rotation, the notch provided in the support portion 23b of the turn plate 23. Part 42
However, the switch lever 43a is located right below the microswitch 43, the detection signal of the ON state is output from the microswitch 43, and the rotation of the disk 1 is stopped by the control circuit based on the detection signal. As a result, the automatic stop mechanism 41 can be realized.

As the positioning holes 44 and 45, not only through holes but also appropriate holes such as blind holes and notched grooves can be used. Note that, in this specification, the engaging portions generally used for the positioning described above, such as the through holes, the blind holes, and the notched grooves, are referred to as positioning holes.

Next, the first embodiment of the music number label attached to the music box disc of the present invention will be described with reference to FIG.
It will be described based on.

The back surface of the disc 1 is provided with the music box valve 27 of the music box sounding body 27 of the music box 20 as described above.
According to a, a plurality of tracks are radially defined, and performance engaging portions 3, 3 are formed at circumferential positions corresponding to the performance timings of the scales assigned to the respective tracks,
A predetermined performance pattern is formed by the performance engagement portions 3 and 3. Therefore, the positions of the performance engaging portions 3 and 3 are different from each other with respect to the music piece on the disk 1.

The engagement portions 3 for performance are, for example,
The projection type is used, and the metal disk 1
Since the projection 6 is formed by cutting and raising the corresponding portion of
A hole 7 is formed on the surface of the disk 1 at a position where the protrusion 6 exists.

At the center on the surface of the disk 1, a music display label 5 on which the music is described is attached in order to display the music indicated by the engaging portions 3 and 3 of the disk 1. At positions corresponding to the mounting hole 2 and the rotation driving hole 4 provided on the disk, holes 5a and 5A having substantially the same size as the both holes are provided.

Further, of the plurality of performance engagement portions 3, 3, the engagement portions 3 A, 3 located on the shortest track from the mounting hole 2.
Marks 5B and 5B are displayed on the music piece display label 5 at a position close to A. The marks 5B, 5B are indicated by dots, for example, as shown in FIG.

When such a music piece display label 5 is to be attached to the surface of the disk 1, first, the mounting hole 2 and the rotation drive hole 4 provided on the disk 1 and the music piece display label 5
5a and 5A provided in
The music piece display label 5 is positioned at a predetermined position with respect to the disc 1. Next, it is visually confirmed whether or not the marks 5B, 5B displayed on the music piece display label 5 are at positions close to the engaging portions 3A, 3A.

Since the positions of the engaging portions 3A, 3A are different from each other in the installation position with respect to the disc 1, if an incorrect label is stuck, the marks 5B, 5B and the engaging portions 3A are not used.
A and 3A do not correspond, and it can be recognized that a sticking error has occurred at the sticking stage.

Further, the marks are not limited to the points shown in FIG. 7, but as shown in FIG. 8, the protrusion-shaped marks are provided on the outer periphery of the music piece display label 5 at the positions corresponding to the engaging portions 3A. 5C, 5C may be provided.

As shown in FIG. 9, the engaging portions 3A, 3A
A mark 5D having a concave shape may be provided at a position corresponding to A.

As shown in FIG. 10, the engaging portions 3A, 3A located on the shortest track from the mounting holes 2 and
Recessed marks 5E, 5E corresponding to the engaging portions 3B, 3B located on the tracks adjacent to the engaging portions 3A, 3A may be provided. In this case, the marks E and 5E correspond to the engaging portions located on the two tracks of the engaging portions 3A and 3A and the engaging portions 3B and 3B adjacent to each other on the music piece display label 5, so that the sticking work can be further performed. It can be done reliably.

The music label 5 may be attached to the outer peripheral portion of the disk 1 where the engaging portion of the disk 1 does not exist, without being provided at the central portion of the disk 1. In this case, the music display label 5 is formed in an annular shape having a size substantially equal to the size of the disc 1, and near the inner circumference of the music display label, close to the engaging portion located on the track farthest from the mounting hole 2. A mark may be set at the position.

[0070]

As described above, the present invention relates to a music box disc having a performance engaging portion formed by a convex portion or a hole for performance and having a music display label attached at a predetermined position. On the surface of the music box, a mark is provided at a portion corresponding to the playing engagement portion. Therefore, when sticking a music display label on the surface of the music box disc, the playing engagement portion is located near the place where the mark exists. By confirming whether or not there is, it is possible to recognize at a glance whether or not the music written on the engaging portion of the music box disc and the music displayed on the music display label match, and the sticking work can be reliably performed. It can be carried out.

Further, since the music engagement label provided on the disc is made to correspond to the mark of the music number display label, the disc is not required to be provided with a separate mark from the music engagement label. It is possible to recognize whether or not the tune written in the joint part matches the tune displayed on the tune display label.

[Brief description of the drawings]

FIG. 1 relates to a specific example of a disc music box of the present invention;
It is a front view which shows the whole structure.

FIG. 2 relates to a specific example of the disc music box of the present invention;
It is a side view which shows schematic whole structure.

FIG. 3 is an external perspective view showing a schematic overall configuration of the music box disc.

4A and 4B show a process of forming a projection which is an engagement drive portion of the music box disc of the present embodiment, wherein FIG. 4A is a perspective view showing a state in which a cut is made in the music box disc, and FIG. Perspective view of a state where a raised portion is formed,
(3) is a perspective view of a state in which the cut-and-raised portion is further bent in the middle to form a projection.

FIG. 5 is a partially omitted perspective view showing a drive mechanism of the disc music box of the present embodiment.

6A and 6B illustrate a sounding operation of the disc music box of the present embodiment, wherein FIG. 6A shows a sounding preparation state, FIG. 6B shows an initial state in which a claw of a star wheel is engaged with an engaging portion of the disc music box, (3) shows a sounding state in which the music box valve is flipped by the claw of the star wheel, and (4) shows a state in which the music box has returned to the sound preparation.

FIG. 7 is a view showing a first embodiment of a music box disc provided with a music piece label according to the present invention.

FIG. 8 is a view showing a second embodiment of a music box disc provided with a music piece label according to the present invention.

FIG. 9 is a diagram showing a third embodiment of a music box disc provided with a music piece label according to the present invention.

FIG. 10 is a view showing a fourth embodiment of a music box disc provided with a music piece display label of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 music box disc 2 mounting hole 3 playing engagement portion 4 drive hole for rotation drive 5 music display label 5a hole 5A positioning hole 5B mark 5C mark 5D mark 5E mark 6 engaging protrusion 7 hole 20 disk music box 21 base stand 22 center Shaft 22a Notch portion for arm lock 23 Turn plate 23a Music box disc mounting portion 23b Support portion 23c Gear portion 23d Drive protrusion 24 Drive mechanism 25 Holding arm 25a Press roller for middle upper surface of music box disc 25b Lock arm 26 Star wheel 26A Star wheel Shaft 27 Music box sounding body 27a Music box valve 29 Fixed support member 31 Worm gear 32 First input gear 33 Transmission shaft 34 First output gear 35 Second gear 35a Input gear 35b Output gear 37 Safety switch mechanism 38 Projection 39 Micro switch 41 Auto stop mechanism 42 Notch 43 Micro switch 43a Switch lever 44 Positioning hole 45 Positioning hole 46 Micro switch 47 Switch M Motor for music box disk drive

Claims (1)

[Claims] 1. A music box disc having a performance engaging portion formed by a convex portion or a hole for performance and having a music display label affixed to a predetermined position, wherein a surface of the music display label includes A music box disc provided with a mark at a portion corresponding to the engaging portion.