JP3925261B2 - Performance equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a performance device such as a music box that mechanically vibrates a sounding body to generate a performance sound, and more particularly to a performance device having an improved drive mechanism for driving the sounding body.
[0002]
[Prior art]
Conventionally, as is well known, a music box is produced by playing a comb-tooth comb vibration valve as a sound generator by a rotating cylinder, and a unique tone color due to the vibration of the comb is preferred. 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 the drum so as to be able to protrude and retract, and the pins are pulled out by an electromagnet during the rotation of the drum, and the comb vibrates with the pins. It is known to play a valve. In addition, as a sound that generates the same timbre as that of a music box by the vibration of the comb, there is also known that a star wheel arranged corresponding to each of a plurality of vibration valves of the comb is selectively played by a solenoid. In this case, the solenoid is moved by a belt with respect to the star wheel arranged corresponding to each of the plurality of vibration valves of the comb, and the star wheel corresponding to the vibration valve to be sounded is driven to rotate by the solenoid. To play.
[0003]
[Problems to be solved by the invention]
In the former type of music box, pins are arranged on the outer peripheral surface of the drum so as to be able to protrude and retract, so that the pull-out control of the pins is performed only at the performance timing according to the rotation speed of the drum and the interval between the holes where the pins are inserted. There is a problem that only music boxes that match the performance timing can be played. On the other hand, the latter type of music box has the advantage of being able to handle any song because the star wheel is pushed and driven by a solenoid, but the star wheel that is driven to rotate in one direction by the solenoid is used for the next sounding operation. It is necessary to prepare and return to a predetermined sounding standby position, and a mechanism or mechanism for that purpose is required. 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.
[0004]
The present invention has been made in view of the above points, and provides a performance device that can devise a mechanism or mechanism for driving a sounding body and perform appropriate sounding driving with a simple configuration. It is something to try.
[0005]
[Means for Solving the Problems]
The performance device according to the present invention includes a plurality of sounding bodies that are pronounced by vibration, arranged in a line, a rotating shaft extending in the direction in which the sounding members are arranged, and a rotational drive of the rotating shaft. And a plurality of sounding body driving units that are attached to the sounding bodies in a one-to-one correspondence with the rotation shaft so as to be rotatable with a sliding resistance. The body drive unit includes a plurality of drive members for vibrating the corresponding sounding body at predetermined angular intervals, and is provided corresponding to each sounding body drive unit. An engaging portion that engages with one of the driving members, reciprocates when the sounding body is caused to sound, and engages one of the driving members with the engaging portion during forward movement; Rotating the body drive unit around the rotation shaft from a predetermined standby state, In the dynamic process by driving the sounding body by other one of said drive member and a drive means for vibrating the emitting sound body, the sounding body driving unit Ri by the said drive means by a predetermined amount of rotation Accordingly, the drive member is separated from the engagement portion to release the engagement, and then the sounding body drive unit is rotated with the rotation of the rotation shaft by the sliding resistance. The sounding body drive unit that has returned to the predetermined standby state and moved to the position of the standby state as the rotary shaft rotates in the standby state in the standby state. One of the driving members in the section is engaged, and the sounding body driving section is stopped at the standby position against the sliding resistance.
According to this, the sounding body driving unit having a plurality of driving members for vibrating the sounding body at predetermined angular intervals is attached to the rotating shaft so as to be rotatable with a sliding resistance, and causes the sounding body to sound. When the driving means is engaged with one of the drive members in the sound generator drive section, the sound generator drive section is rotated around the rotation shaft from a predetermined standby state, and the rotation Since the sounding body is driven by another one of the driving members in the process to vibrate the sounding body, the sounding body driving unit resists this sliding resistance during sound generation. The sounding body can be driven and vibrated by a drive member by rotating the sounding body around the rotation shaft, and then the sounding body drive unit is driven by the rotation shaft through a sliding resistor to Can be restored to the standby state, and Direction of the rotation axis to a, that is, there is no need to take extra space with respect to side-by-side direction of the plurality of sounding members, it can be realized in a compact structure. That is, the driving means engages one of the driving members in the sounding body driving unit corresponding to the sounding body to be sounded during forward movement , thereby rotating the sounding body driving unit from a predetermined standby state. Since the sounding body is driven by the other one of the drive members to vibrate the sounding body by rotating around the axis, the sounding body is vibrated side by side with respect to the corresponding sounding body. Therefore, the structure can be arranged on the same line with respect to the radial direction of the rotation axis, so that individual driving means are not interposed in the horizontal direction of the plural sounding bodies, and the horizontal direction of the plural sounding bodies Therefore, it is not necessary to take extra space, and the overall configuration can be made compact. In addition, the sounding body drive unit that has been driven to rotate by the driving means is returned to a predetermined standby state, that is, a sounding standby position in preparation for the next sounding operation, and is driven by a rotating shaft via a sliding resistance. It is realized by a simple mechanism or mechanism of rotating. Further, in the standby state, one of the drive members in the sounding body drive unit that has moved to the position of the standby state with the rotation of the rotary shaft is engaged with the engagement portion of the drive means, The sounding body driving unit is configured to stop at the standby position against the sliding resistance, so that the sounding body driving unit can be reliably stopped at the predetermined standby state, and the vibration is damped. There is no possibility of unnecessarily stopping the sound generator in the middle or generating noise, and the sound generator driver can be driven stably.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the accompanying drawings.
In this embodiment, an example in which the performance 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 cross-sectional view showing a physical arrangement mode of the comb, pick and swing arm of the music box shown in FIG.
1 and 2, the music box has a lead block 2 on a base 1, and a comb 3 as a sound generator is disposed on the block 2. The comb 3 is composed of a metal comb tooth plate extending 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 there is used as the vibration valve 3b. Equivalent to. In a base chassis 4 provided on the base 1, a rotating shaft 5 that is rotatably held is rotated in the forward direction (clockwise in FIG. 2) for sound generation by a motor M connected to one end thereof. Is done. The rotating shaft 5 includes a plurality of picks 6 corresponding to the vibration valves 3b along the axial direction.
[0007]
As shown in an enlarged view in FIG. 3, each pick 6 is attached by fitting a hole 6 b of a ring-shaped pick body 6 a into the rotating shaft 5. 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 drive of the rotary shaft 5. It is attached with a fitting form. This sliding resistance R is smaller than an urging force Sf of a swing arm urging spring 9 described later (Sf> R). Each pick 6 has a plurality of pick claws (four in the illustrated example) 6c for driving the free end of the vibration valve 3b, and is arranged on the outer peripheral surface of the pick body 6a at an interval of approximately 90 degrees. . Each pick 6c is a curved surface (vibrating valve striking surface) in which the surface of the rotating shaft 5 on the rotational direction side is gently curved in the rotational direction. The rotating shaft 5 and the pick 6 may be made of any material such as metal or resin.
[0008]
In the base chassis 4, the shaft 7 held on the opposite side of the comb 3 includes a plurality of swing arms 8 corresponding to the respective picks 6 along the axial direction thereof. Each swing arm 8 is swingable in the vertical direction on the shaft 1 as a fulcrum on the base 1 shown in FIG. 2, and is always upward (opposite side of the base 1) by a spring 9 (torsion coil spring) wound around the shaft 7. ). In each swing arm 8, the arm head 8a on the pick 6 side abuts on a stopper 10 installed above the chassis 4 by the biasing force of the spring 9, and the upward movement is restricted by the stopper 10 ( (See FIG. 2). The arm head 8a is provided with a U-shaped groove 8b on the front end surface, and in the normal state (when the pick 6 is not driven), as shown in FIG. 6c enters and is locked. On the base 1, a magnet 12 and a pair of yokes 13 (only one yoke is shown in the figure) are provided so as to sandwich the magnet 12 for each swing arm 8. Each swing arm 8 includes a coil 11 that is wound horizontally on one side surface thereof, and is disposed so as to face the magnet 12 and be positioned between the pair of yokes 13. The coil 11 has a very short coil length (length along the coil axis), and the entire swing arm 8 including the coil 11 has a small thickness, and when it is attracted toward the lower magnet 12 as will be described later, Between the yokes 13.
[0009]
Here, the arrangement of the vibration valves 32 will be described with reference to FIG. In FIG. 1, for the sake of convenience, (d1) to (dn) are used as codes for distinguishing individual vibration valves 3b, and (p1) to (pn) are used as codes for distinguishing individual pick parts 6. (S1) to (sn) are used as symbols for distinguishing the individual swing arms 8, and the subscripts 1 to n indicate the correspondence between the vibration valve 3b, the pick 6, and the swing arm 8. For example, the vibration valve (d1) is driven by a pick (p1). The vibration valves (d1) to (dn) corresponding to the picks (p1) to (pn) are, for example, a vibration valve (d1) having a pitch name C #, and a vibration valve (d2) having a pitch name C #. It is assumed that (d3) is formed as a pitch name D ... so that the pitch increases in order of semitones in order from the vibration valve (d1) to (d2), (d3), ..., (dn). .
In the example of FIG. 1, for example, each of the picks (p1) to (pn) is driven by the swing arm (s1) and the pick (p2) is driven by the swing arm (s2). p3) is driven by the swing arm (s3), and so on, and is arranged corresponding to the arrangement of the vibration valves 3b. That is, the pick 6 and the swing arm 8 are arranged corresponding to the arrangement of the vibration valves 3b.
[0010]
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 an SMF (standard MIDI file) format from an external MIDI device (not shown). Further, MIDI performance data of an arbitrary song may be fetched from a removable external memory such as a card type memory. The imported MIDI performance data is temporarily stored in the RAM 23 via the data bus 22, and if necessary, the MIDI performance data is converted into a predetermined data format handled by the music box, and the converted performance data is stored in the RAM 23. The The RAM 23 can store performance data for one or more songs. The ROM 24 is represented in a predetermined data format handled by the music box, in addition to various program data such as performance program data necessary for processing performance data and program data necessary for driving the swing arm 8. The performance data of one or a plurality of music is stored. The performance data of one song stored in the RAM 23 and the ROM 24 is a set of notes, such as pitch, touch, and sounding timing corresponding to each note (note event data). It consists of data.
[0011]
When the song number of performance data desired by the user is selected by a song selection switch (not shown), the CPU 25 sequentially reads the performance data corresponding to the selected song number from the RAM 23 or the ROM 24 in accordance with the performance order and sounding timing. . Of the performance data thus read, 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 drive 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 turned-on swing arm 8 is pushed down to rotate the pick 6, and the vibration valve 3b corresponding to this pick is driven as described later, and a music box sound corresponding to the pitch data is generated. . As is well known, it is possible to adjust the tempo of playback performance by adjusting the speed of the internal tempo clock. The performance data is not limited to data read from the RAM 23 or the ROM 24, and may be data generated by an operation of an input operation unit such as a keyboard or a pad.
[0012]
The operation mode of the pick 6 driven by the swing arm 8 will be described with reference to FIGS. 2 and 5A to 5C. 5, (A) shows the standby state of the pick 6, (B) shows the state at the moment when the vibration valve 3b is bounced by the pick 6, and (C) shows the vibration valve 3b bounced by the pick 6. The state before returning to the standby state is shown. It is assumed that the rotating shaft 5 is always driven to rotate clockwise by the motor M.
In the non-driven 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 abuts against the stopper 10 to restrict upward movement. At the top dead center. When the swing arm 8 is at the top dead center, one claw 6c (pick claw indicated by reference numeral 6c1 in the figure) of the pick 6 enters the groove 8b of the arm head 8a and is locked by the swing arm, Even if 5 is rotating, the sliding resistance R between the pick 6 and the rotating shaft 5 is smaller than the urging force Sf of the coil spring 9 (Sf> R). 6 is stopped in the standby state shown in FIG. At this time, the claw 6c (pick claw indicated by reference numeral 6c3 in the drawing) that functions as an impact is located at a predetermined drive start position.
In FIG. 2, when the coil 11 of the swing arm 8 is energized (ON drive), a magnetic flux is generated, and an attractive force (in the direction of the arrow x in the drawing) is generated in the direction of pulling the swing arm 8 between the yokes 13. 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 one-dot chain line against the biasing force of the spring 9. The energization to the coil 11 is immediately turned off.
In the lowering process of the swing arm 8, the pick claw 6c1 is pushed downward by the groove 8b, and the pick 6 is rotationally driven clockwise by a predetermined amount against the sliding resistance R. In the descending process, the pick pick claw 6c3 for hitting which was initially at the driving start position corresponding to the top dead center as shown in FIG. 5 (A) is vigorously rotated upward, and FIG. 5 (B). The vibration valve hitting position as shown is passed, and at that moment, the corresponding vibration valve 3b is flipped. As a result, the vibration valve 3b vibrates and produces sound. When the swing arm 8 reaches the bottom dead center, the pick claw 6c3 used for hitting passes through the vibration valve hitting position as shown in FIG. At the bottom dead center, the pick claw 6c1 that has been locked in the groove 8b is detached from the groove 8b. As a result, the pick 6 becomes free with respect to the swing arm 8, so that the pick 6 is rotated in the clockwise direction by the action of the sliding resistance R with respect to the rotating shaft 5. As a result, a predetermined claw 6c (a pick claw indicated by reference numeral 6c4 in the drawing) that functions as the next locking comes into contact with the distal end surface of the arm head 8a.
When the coil 11 of the swing arm 8 is de-energized, the swing arm 8 is raised from the bottom dead center shown in FIG. When the swing arm 8 reaches the top dead center, the pick claw 6c4 that functions as the next locking member enters the groove 8b of the arm head 8a, and the driven rotation of the pick 6 stops by engaging with the groove 8b. Thus, the pick 6 returns to a predetermined standby state as shown in FIG. At this time, the pick claw 6c2 has come to the drive start position (the position of 6c3 in FIG. 5A) where the pick claw that functions next for valve striking is located.
[0013]
The music box shown in the present embodiment may be configured to drive the corresponding pick 6 by using a solenoid 20 as shown in FIG. 6 instead of each swing arm 8.
In FIG. 6, a solenoid 20 has a solenoid coil 21 and a plunger 24 housed in a plunger housing part 22 via a spring 25 so as to be movable up and down, and is fixed to yokes 23a and 23b. The plunger head 24 a at the tip of the plunger 24 is provided with a groove 24 b for locking the pick claw 6 c of the pick 6. FIG. 6 shows a state where the plunger 24 is at the top dead center. The plunger head 24a abuts against the stopper 10, and the pick claw 6c of the pick 6 enters and is locked in the groove 24b. 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. In response to this, the pick claw 6c of the pick 6 is pushed down by the groove 24b of the plunger head 24a. As a result, the pick 6 is rotationally driven in the same manner as described with reference to FIGS. 5A to 5C against the sliding resistance with respect to the rotary shaft 5, and the pick claw 6c strikes the vibration valve 3b. To do. As a result, the vibration valve 3b vibrates and produces sound. Similarly 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 rotated by the rotating shaft 5 by sliding resistance. When the energization of the coil 21 is cut off, the plunger 24 moves from the bottom dead center to the top dead center by the biasing force of the spring 25. Accordingly, the pick claw 6c of the pick 6 enters the groove 24b of the plunger head 24, and the driven rotation of the pick 6 stops by engaging with the groove 8b. In this way, the pick 6 returns to a predetermined standby state as described with reference to FIG.
[0014]
When the solenoid 20 is used, an arrangement similar to that of the swing arm 8 shown in FIG. 2 is provided by appropriately arranging the solenoids 20 in the vertical direction in two to three stages so that adjacent solenoids 20 do not physically interfere with each other. It can be. Thereby, the shape of the plunger head 24a can be formed in the same thickness as the arm head 8a. In this example, the example in which the solenoid 20 is disposed perpendicular to the base 1 has been described. However, as another modification, the solenoid 20 is disposed horizontally with respect to the base 1 and the plunger 24 is moved from the top dead center described above. The pick 6 is driven to rotate by moving to the bottom dead center, the vibration valve 3b is hit with the pick claw 6c, and the plunger 6 is moved from the bottom dead center to the top dead center to wait for the pick 6. You may make it return to a state.
[0015]
As described above, since the plurality of thin picks 6 and swing arms 8 as shown in FIG. 2 can be arranged at a narrow pitch interval corresponding to the arrangement of the vibration valves 3b, appropriate sound generation with a simple configuration is possible. Drive can be performed. Therefore, the structure of the drive unit can be simplified and the drive unit can be reduced in size. Further, since the pick 6 can be returned to the sound generation standby state in accordance with the movement of each swing arm 8, the sound generation operation can be performed at an arbitrary timing.
[0016]
In the music box shown in the present embodiment, the rotary shaft 5 is always driven to rotate, but may be intermittently driven. For example, the pick 6 can be returned to the standby state by rotating the rotary shaft 5 only when the swing arm 8 and the plunger 24 are moved from the bottom dead center to the top dead center. Further, when the swing arm 8 and the plunger 24 are moved from the bottom dead center to the top dead center, the vibration 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. You may make it hit | damage the vibration valve 3b with the pick 6 when moving. In this case, the pick 6 is driven and rotated by the action of the sliding resistance with respect to the rotating shaft 5 during the movement of the swing arm 24 and the plunger 24.
The performance device according to the present invention is not limited to the music box shown in the present embodiment, and may be applied to an automatic performance device configured to play strings such as playing a harp automatically. In the present embodiment, the pick 6 is rotated by the swing arm 8 to play the sounding body (vibration valve 3b). However, the swing arm has only a function of stopping the pick rotation when the sound is not generated. The rotation of the pick may be given by the rotation of the rotating shaft 5.
[0017]
【The invention's effect】
As described above, according to the performance device of the present invention, it is possible to realize a performance device capable of performing appropriate sound generation drive with a simple configuration.
[Brief description of the drawings]
FIG. 1 is a plan view showing a schematic configuration of a configuration example of a music box according to an embodiment.
2 is a cross-sectional view showing a physical arrangement of a music box comb, a pick, and a swing arm shown in FIG. 1; 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 swing arm drive control.
FIGS. 5A and 5B are diagrams illustrating an operation mode of a pick driven by a swing arm, where FIG. 5A is a diagram illustrating a standby state of the pick, and FIG. 5B is a diagram illustrating a state at a moment when a vibration valve is bounced by the pick; FIG. 4C is a view showing a state before returning to a standby state after the vibration valve is bounced with the pick.
FIG. 6 is a schematic cross-sectional view showing a configuration example when a solenoid is used instead of a swing arm.
[Explanation of symbols]
3 Comb 3b Vibration valve 5 Rotating shaft 6 Pick 6c Pick claw 8 Swing arm 8a Arm head 11 Coil 12 Magnet 9, 25 Spring 20 Solenoid 24 Plunger M Motor

Claims (3)

A plurality of sound generators that are pronounced by vibration, arranged side by side,
A rotation axis extending along the direction of arrangement of the sounding bodies;
A rotation drive unit for rotating the rotation shaft;
A plurality of sounding body driving units attached to the sounding bodies in a one-to-one correspondence so as to be rotatable with sliding resistance with respect to the rotation shaft, each sounding body driving unit corresponding to A plurality of driving members for vibrating the sounding body at a predetermined angular interval;
It provided corresponding to said each sounding body driving unit, includes an engaging portion for engaging one of said drive member in the emitting sound body driving unit reciprocates when to sound the sounding body, the forward scan In this case, one of the drive members is engaged with the engagement portion, and the sounding body drive unit is rotated around the rotation shaft from a predetermined standby state. by driving the sounding body; and a driving means for vibrating the emitting sound body by one, the driving member is the engagement with the said sounding body driving unit Ri by the said drive means by a predetermined amount of rotation The engagement is released by moving away from the joint portion , and then the sounding body driving unit is rotated in accordance with the rotation of the rotating shaft by the sliding resistance, thereby bringing the sounding body driving unit into the predetermined standby state. To return to
In the standby state, one of the drive members in the sounding body drive unit that has moved to the position of the standby state as the rotating shaft rotates is engaged with the engaging portion of the drive means, and the sliding member is engaged. A performance apparatus, characterized in that the sounding body driving unit is stopped at a position in the standby state against dynamic resistance.   The performance device according to claim 1, wherein the engaging portion of the driving unit includes an engaging groove.   The driving means includes a movable member formed with the engaging portion, a means for driving the movable member in one direction from a predetermined standby position when sounding the sounding body, and then moving the movable member to the Means for returning to the standby position, and at the standby position, one of the driving members of the sounding body driving unit is engaged with the engaging portion, and the sounding body driving unit resists the sliding resistance. The performance device according to claim 1, wherein the performance device is locked at a position in the standby state.

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