JP2003280638A - Playing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform a proper sounding driving with a simple constitution. <P>SOLUTION: A playing device is equipped with a sounding body 3 which vibrates to sound, a sounding body driving part 6 which is fitted to a rotary shaft 5 rotatably with slide resistance and has a driving member for vibrating the sounding body, a rotary driving part M which drives the rotary shaft to rotate, and a driving means 8 which drives the sounding body driving part. To make the sounding body sound, the driving means 8 rotates the sounding body driving part around the rotary shaft from a specified standby state against the slide resistance and in the process of the rotation, the driving member drives the sounding body to vibrate. After the rotation of the sounding body driving part by the driving means, the sounding body driving part is put back into the specified standby state accompanying the rotation of the rotary shaft through the slide resistance. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a musical instrument, such as a music box, which mechanically vibrates a sounding body to generate a performance sound, and more particularly to a musical instrument having an improved drive mechanism for driving the sounding body. is there.

[0002]

2. Description of the Related Art As is well known, a music box has hitherto been produced by flipping a comb-like vibration valve, which is a sounding body, with a rotating cylinder, and a unique tone color due to vibration of the comb is preferable. It is rare. As a cylinder rotation type music box, for example, a plurality of pins made of a magnetic material are arranged on the outer peripheral surface of a drum so that the pins can be retracted and retracted, and the pins are drawn out by an electromagnet while the drum is rotating, and the pins vibrate. It is known that the valve is played. In addition, as a sound generated by the vibration of the comb with a tone color similar to that of a music box, there is also known one in which a star wheel arranged corresponding to each of a plurality of vibration valves of the comb is selectively flipped by a solenoid. In this case, the solenoid is moved by a belt with respect to the star wheels arranged corresponding to the plurality of vibration valves of the comb, and the star wheels corresponding to the vibration valves to be sounded by the solenoids are rotationally driven to thereby cause the vibration valve. Is designed to be played.

[0003]

In the former type of music box, since the pins are arranged on the outer peripheral surface of the drum so as to be retractable, the performance according to the rotation speed of the drum and the interval of the holes into which the pins are inserted. There is a problem that the pulling-out control of the pin can be performed only at the timing, and only the music box music that matches the performance timing can be played. On the other hand, in the latter type of music box, the star wheel is pushed by the solenoid to rotate it, so it has the advantage of being able to handle any song, but the star wheel driven in one direction by the solenoid can be used for the next sounding operation. It is necessary to return to a predetermined sounding standby position in preparation, and a mechanism or mechanism for that purpose needs to be devised. Further, in addition to the solenoid, a belt for moving the solenoid along the arrangement direction of the vibration valves is required, which complicates the structure of the drive unit and increases the size of the music box itself.

The present invention has been made in view of the above points, and is a performance in which a mechanism or a mechanism for driving a sounding body is devised so that appropriate sounding driving can be performed with a simple structure. It is intended to provide a device.

[0005]

A playing device according to the present invention comprises a sounding body which is sounded by vibrating and a sounding body which is rotatably attached to a rotating shaft with a sliding resistance so as to vibrate the sounding body. A sounding body driving section having a driving member for rotating the rotary shaft, and a sounding body driving section for driving the sounding body from a predetermined standby state when the sounding body driving section resists the sliding resistance. Driving means for driving the sounding body by the driving member to vibrate the sounding body in the course of the rotation, and the sounding body driving section by the driving means. After the rotation, the sounding body driving unit is returned to the predetermined standby state with the rotation of the rotary shaft via the sliding resistance. According to this, since the sounding body driving section having the driving member for vibrating the sounding body is rotatably attached to the rotating shaft with sliding resistance, this sliding resistance is generated during sounding. By rotating the sounding body drive section around the rotating shaft against the vibration, the driving member can drive the vibrating body to vibrate, and then rotate the rotating shaft driven by the sliding resistance. Then, the sounding body driving unit can be returned to a predetermined standby state. Therefore, the sounding body driving unit after being rotationally driven by the driving unit is
In order to prepare for the next sounding operation, a predetermined standby state, that is, returning to the sounding standby position is realized by a simple mechanism or mechanism in which the rotary shaft is driven to rotate via a sliding resistance.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the accompanying drawings. In the present embodiment, an example in which the playing device of the present invention is applied to a music box will be described. FIG. 1 is a plan view showing a schematic configuration of a configuration example of a music box according to the present embodiment, and FIG. 2 is a sectional view showing a physical arrangement mode of a comb, a pick, and a swing arm of the music box shown in FIG. 1 and 2, the music box is provided with a lead block 2 on a base 1, and a comb 3 as a sounding body is arranged on the block 2. The comb 3 is made of a metal comb tooth plate that extends substantially parallel to the base 1 from the edge of the base portion 3a attached to the block 2, and each of the plurality of comb teeth provided therein serves as the vibration valve 3b. Equivalent to. In a base chassis 4 provided on the base 1, a rotary shaft 5 rotatably held is rotationally driven in a forward direction (clockwise in FIG. 2) for sound generation by a motor M connected to one end thereof. To be done. The rotary shaft 5 has picks 6 that correspond to the respective vibration valves 3b along the axial direction.
It has a plurality of.

As shown in an enlarged view in FIG. 3, each pick 6 is attached by fitting a hole 6b of a ring-shaped pick body 6a into the rotary shaft 5. More specifically, a predetermined sliding resistance (friction resistance) R is generated between the contact surfaces formed by the inner peripheral surface of the hole 6b of the pick body 6a and the outer peripheral surface of the rotary shaft 5 during the rotational driving of the rotary shaft 5. It is attached with a fitting form. This sliding resistance R is smaller than the urging force Sf of the swing arm urging spring 9 described later (Sf> R). Each pick 6 is provided with a plurality of pick claws (four in the example shown) 6c for driving the free end of the vibration valve 3b on the outer peripheral surface of the pick body 6a at intervals of approximately 90 degrees. . The surface of the pick 6c on the rotation direction side of the rotary shaft 5 is a curved surface (vibration valve striking surface) that is oriented in the rotation direction and gently curves. The rotary shaft 5 and the pick 6 may be made of any material such as metal or resin.

Further, in the base chassis 4, the comb 3
The shaft 7, which is held on the opposite side of, has a plurality of swing arms 8 corresponding to each of the picks 6 along the axial direction thereof. Each swing arm 8 is vertically swingable on a base 1 shown in FIG. 2 about a shaft 7 as a fulcrum, and is always upward (opposite to the base 1) by a spring 9 (torsion coil spring) wound around the shaft 7. Direction). Each swing arm 8 has a spring 9
The arm head 8a on the pick 6 side comes into contact with the stopper 10 installed above the chassis 4 by the urging force of, and the upward movement is restricted by the stopper 10 (FIG. 2).
reference). The arm head 8a has a U-shaped groove 8 on the tip surface.
In the normal state (when the pick 6 is not driven), one pick claw 6c of the pick 6 is inserted into and locked in the groove 8b as shown in FIG. On the base 1, a magnet 12 is provided for each swing arm 8 and a pair of yokes 13 (only one yoke is shown in the figure) so as to sandwich the magnet 12. Each swing arm 8 is provided with a coil 11 wound in a horizontally long shape on one side surface thereof, and is arranged so as to face the magnet 12 and be located between the pair of yokes 13. The coil 11 has a very short coil length (length along the coil axis), and one swing arm 8 including the coil 11 as a whole has a thin thickness, and when it is attracted toward the lower magnet 12 as described later, a pair of It is designed to enter between the yokes 13.

Here, the arrangement of the vibration valves 32 will be described with reference to FIG. In FIG. 1, for convenience, the individual vibration valves 3
(d1) to (dn) are used as codes for distinguishing b, and (p) is used as a code for distinguishing each pick portion 6.
1) to (pn), (s1) to (sn) are used as symbols for distinguishing each swing arm 8, and subscripts 1 to n indicate the correspondence between the vibration valve 3b, the pick 6, and the swing arm 8. Shows. For example, the vibration valve (d1) is driven by the pick (p1). Each pick (p1) ~ (p
In the vibration valves (d1) to (dn) corresponding to n), for example, when the vibration valve (d1) has a pitch name C, the vibration valve (d2) has a pitch name C # and the vibration valve (d3) has a pitch name D. As described above, it is assumed that the vibration valves (d1) to (d2), (d3) ,. In addition, in the example of FIG. 1, each pick (p1)
~ (Pn), for example, the pick (p1) is driven by the swing arm (s1), the pick (p2) is driven by the swing arm (s2), the pick (p3) is driven by the swing arm (s3), Thus, the vibration valves 3b are arranged corresponding to the arrangement. That is, the pick 6 and the swing arm 8 are respectively provided with the vibration valve 3b.
It is arranged corresponding to the arrangement of.

Next, drive control of the swing arm 8 will be described with reference to FIG. FIG. 4 is a schematic block diagram showing an example of a hardware configuration related to the drive control. The MIDI interface (I / F) 21 takes in performance data in a format such as SMF (standard MIDI file) format from an external MIDI device (not shown). In addition, MIDI of any song can be recorded from a removable external memory such as a card type memory.
You may make it take in performance data. Captured M
The IDI performance data is transferred to the RAM 2 via the data bus 22.
3, the MIDI performance data is converted into a predetermined data format handled by the music box if necessary, and the converted performance data is stored in the RAM 23. The RAM 23 can store performance data for one to a plurality of songs. In the ROM 24, in addition to various program data such as performance program data required to process the performance data and program data required to drive the swing arm 8, a predetermined data format handled by the music box is displayed. Performance data of one or a plurality of songs are stored. RAM23 and ROM2
The performance data of one tune stored in No. 4 is a plurality of sets of data corresponding to the number of notes of one tune, with one set of data (note event data) such as pitch, touch and sounding timing corresponding to each note. Consists of.

When the music number of the performance data desired by the user is selected by a music selection switch (not shown), the CPU 25 outputs the performance data corresponding to the selected music number from the RAM 23 or the ROM 24 in the performance order and sounding timing. Are sequentially read according to. Among the read performance data, pitch data and key-on data are output to the driver 26 as signals for controlling the drive of the swing arm 8. The driver 26 turns on the coil driving unit 27 of the swing arm 8 corresponding to the given pitch data (turns on the coil energization of the swing arm 8). In response to this, the swing arm 8 which is turned on is pushed down to rotate the pick 6, the vibration valve 3b corresponding to this pick is driven as described later, and the music box sound corresponding to the pitch data is sounded. . As is well known, it is possible to adjust the tempo of reproduction performance by adjusting the speed of the internal tempo clock. The performance data is stored in RAM2.
3 and the data read from the ROM 24, and may be data generated by an operation of an input operation unit such as a keyboard or a pad.

Referring to FIGS. 2 and 5A to 5C,
An operation mode of the pick 6 driven by the swing arm 8 will be described. In FIG. 5, (A) shows the standby state of the pick 6, (B) shows the state at the moment when the vibrating valve 3b is flipped with the pick 6, and (C) shows the vibrating valve 3b with the pick 6. After that, the state before returning to the standby state is shown. The rotating shaft 5 is always driven to rotate clockwise by the motor M. In the non-driving state of the swing arm 8 shown in FIGS. 2 and 5A, the swing arm 8 is biased upward by the coil spring 9, and the arm head 8a comes into contact with the stopper 10 to restrict the upward movement. It is at the top dead center. One claw 6c of the pick 6 when the swing arm 8 is at the top dead center (pick claw 6c1 shown in the figure)
Is inserted into the groove 8b of the arm head 8a and is locked by the swing arm, and even if the rotary shaft 5 is rotating, the sliding resistance R between the pick 6 and the rotary shaft 5 depends on the biasing force Sf of the coil spring 9. Is also small (Sf> R), the rotary shaft 5 idles with respect to the pick 6, and the pick 6 moves as shown in FIG.
It is stopped in the standby state shown in (A). At this time, the claw 6c (pick claw 6c3 shown in the drawing) that functions as a hit is located at a predetermined drive start position. In FIG. 2, when the coil 11 of the swing arm 8 is energized (on-driving), a magnetic flux is generated, and a suction force (in a direction of an arrow x in the drawing) is generated between the yokes 13 in a direction of pulling the swing arm 8, The swing arm 8 is attracted to the magnet 12. As a result, the swing arm 8 descends from the top dead center indicated by the solid line to the bottom dead center indicated by the alternate long and short dash line against the biasing force of the spring 9. The power supply to the coil 11 is immediately turned off. In the descending process, the swing arm 8 pushes the pick claw 6c1 downward by the groove 8b, and rotatably drives the pick 6 clockwise against the sliding resistance R by a predetermined amount. In this descending process,
The hitting pick claw 6c3, which was initially at the drive start position corresponding to the top dead center as shown in FIG. 5 (A), swung upwardly with vigorous force, and the vibrating valve as shown in FIG. 5 (B). After passing the striking position, at that moment, the corresponding vibration valve 3b is flipped. As a result, the vibration valve 3b vibrates and sounds. When the swing arm 8 reaches the bottom dead center, the pick claw 6c3 used for striking passes above the vibrating valve striking position and reaches above it, as shown in FIG. At this bottom dead center, the pick claw 6c1 that was locked in the groove 8b is not in the groove 8b.
Leave from. As a result, the pick 6 becomes free with respect to the swing arm 8 and is driven and rotated clockwise by the action of the sliding resistance R on the rotary shaft 5. As a result, the predetermined claw 6c (pick claw 6c4 in the figure) that functions for the next engagement comes into contact with the tip surface of the arm head 8a. Swing arm 8 coil 1
When the power supply to 1 is cut off, the swing arm 8 rises from the bottom dead center shown in FIG. When the swing arm 8 reaches the top dead center, the pick claw 6c that functions as the next lock
4 enters the groove 8b of the arm head 8a and engages with the groove 8b, whereby the driven rotation of the pick 6 is stopped. In this way, the pick 6 returns to the predetermined standby state as shown in FIG. At this time, the pick claw 6c2 is located at the drive start position (the position of 6c3 in FIG. 5A) where the pick claw functioning next for hitting the valve is located.

In the music box shown in this embodiment, each swing arm 8 is replaced by a solenoid 2 as shown in FIG.
The pick 6 may be driven by using 0 respectively. In FIG. 6, the solenoid 20
Has a solenoid coil 21 and a plunger 24 housed in a plunger housing 22 so as to be vertically movable via a spring 25, and is fixed to the yokes 23a and 23b. Plunger head 24 at the tip of the plunger 24
A groove 24b for locking the pick claw 6c of the pick 6 is provided in a. FIG. 6 shows a state in which the plunger 24 is at the top dead center, the plunger head 24a contacts the stopper 10, and the pick claw 6c of the pick 6 is placed in the groove 24b.
Is locked in. When the coil 21 is energized and the solenoid 20 is energized, the plunger 24 moves from the top dead center to the bottom dead center against the spring 25. Accordingly, the groove 24b of the plunger head 24a
Push down the pick claw 6c of the pick 6. This allows
The pick 6 resists the sliding resistance with respect to the rotating shaft 5 and is shown in FIG.
It is rotationally driven in the same manner as described with reference to (A) to (C), and strikes the vibration valve 3b with the pick claw 6c. As a result, the vibration valve 3b vibrates and a sound is produced. Also,
Similar to the above, at the bottom dead center of the plunger 24, the pick claw 6c is disengaged from the groove 24b, and the pick 6 is driven to rotate by the rotation shaft 5 due to the sliding resistance. When the coil 21 is de-energized, the plunger 24 moves to the spring 2
It moves from bottom dead center to top dead center by the urging force of 5. Accordingly, the pick claw 6c of the pick 6 enters the groove 24b of the plunger head 24 and engages with the groove 8b, whereby the driven rotation of the pick 6 is stopped. Thus pick 6
Returns to a predetermined standby state in the same manner as described with reference to FIG.

When the solenoids 20 are used, the solenoids 2 are arranged so that adjacent solenoids 20 do not physically interfere with each other.
By arranging 0s vertically in two or three stages, the same arrangement as the swing arm 8 shown in FIG. 2 can be obtained. As a result, the plunger head 24a can be formed to have the same thickness as the arm head 8a. In this example, the example in which the solenoid 20 is arranged vertically with respect to the base 1 has been described, but as another modification, the solenoid 20 is arranged horizontally with respect to the base 1, and the plunger 24 is arranged from the above-mentioned top dead center. By moving to the bottom dead center, the pick 6 is rotationally driven, hitting the vibration valve 3b with the pick claw 6c, and moving the plunger 24 from the above-mentioned bottom dead center to the top dead center, thereby waiting for the pick 6 You may make it return to a state.

As described above, since a plurality of thin picks 6 and swing arms 8 as shown in FIG. 2 can be arranged at a narrow pitch interval according to the arrangement of the vibrating valves 3b, the structure is simple. Appropriate sound generation can be performed.
Therefore, the structure of the drive unit can be simplified, and the drive unit can be downsized. Further, since the pick 6 can be returned to the sounding standby state according to the movement of each swing arm 8, the sounding operation can be performed at an arbitrary timing.

In the music box shown in the present embodiment, the rotary shaft 5 is constantly driven to rotate, but intermittent rotation drive may be used. For example, the swing arm 8 and the plunger 24
It is possible to return the pick 6 to the standby state by rotationally driving the rotary shaft 5 only when moving from bottom dead center to top dead center. In addition, the swing arm 8 and the plunger 2
4 is moved from the bottom dead center to the top dead center, the vibrating valve 3b is hit with the pick 6, but the swing arm 8 and the plunger 24 are moved from the top dead center to the bottom dead center. The vibration valve 3b may be hit with. In this case, the pick 6 includes the swing arm 24 and the plunger 2.
In the moving process of 4, the sliding resistance of the rotary shaft 5 causes the driven shaft to rotate. The playing device according to the present invention,
The present invention is not limited to the music box shown in this embodiment,
It may be applied to an automatic playing device having a structure for playing strings, such as automatically playing a harp. In the present embodiment, the pick 6 is rotated by the swing arm 8 to flip the sounding body (vibration valve 3b). However, the swing arm has only the function of stopping the rotation of the pick when the sound is not generated, and the sound is generated when the sound is generated. The rotation of the pick may be given by the rotation of the rotating shaft 5.

[0017]

As described above, according to the musical performance apparatus of the present invention, it is possible to realize a musical performance apparatus capable of performing appropriate sounding drive with a simple structure.

[Brief description of drawings]

FIG. 1 is a plan view showing a schematic configuration of a configuration example of a music box according to the present embodiment.

FIG. 2 is a cross-sectional view showing a physical arrangement mode of a comb, a pick, and a swing arm of the music box shown in FIG.

FIG. 3 is an enlarged perspective view of a pick attached to a rotating shaft.

FIG. 4 is a schematic block diagram showing an example of a hardware configuration related to drive control of a swing arm.

5A and 5B are diagrams showing an operation mode of a pick driven by a swing arm, wherein FIG. 5A is a view showing a standby state of the pick, and FIG. 5B is a state at a moment when the vibration valve is flipped by the pick. The figure (C) is a figure which shows the state before returning to a standby state, after flipping a vibration valve with the same pick.

FIG. 6 is a schematic configuration sectional view showing a configuration example in which a solenoid is used instead of a swing arm.

[Explanation of symbols]

3 combs 3b Vibration valve 5 rotation axes 6 picks 6c pick claw 8 swing arms 8a arm head 11 coils 12 magnets 9,25 spring 20 solenoid 24 Plunger M motor

Claims (4)

[Claims] 1. A sounding body that produces a sound by vibrating, and a sounding body drive section that is rotatably attached to a rotating shaft with a sliding resistance and has a drive member for vibrating the sounding body. A rotation drive unit that rotationally drives the rotation shaft, and when the sounding body is sounded, the sounding body is rotated around the rotation shaft from a predetermined standby state, and the sounding body is driven by the driving member during the rotation. Driving means for vibrating the sounding body, and after the sounding body driving part is rotated by the driving means, the sounding body driving part is driven by the rotation of the rotary shaft via the sliding resistance. A performance device for returning to the predetermined standby state. 2. The performance device according to claim 1, wherein the drive means reciprocates so as to rotate the sounding body drive unit around the rotation shaft during one of forward movement and backward movement. . 3. The drive means moves the sounding body drive section, which has moved to the position of the predetermined standby state in accordance with the rotation of the rotary shaft, at the position of the standby state against the sliding resistance. The playing device according to claim 1 or 2, further comprising a stopper structure for locking. 4. A plurality of the sounding bodies are provided, a plurality of the sounding body driving parts are provided for one rotation shaft, and the driving means is provided for each of the sounding body driving parts. 4. The playing device according to any one of 3 to 3.