KR200221630Y1 - Automatic music page turner - Google Patents

Abstract

The present invention discloses an automatic sheet music apparatus for automatically handing over sheet music. Automatic musical instrument apparatus according to the present invention and the housing; A motor installed inside the housing; A gear train transmitting a driving force of the motor; A cylindrical rotating body provided to be rotatable by a gear train and having a plurality of sector gears formed on the outer surface so as to form a plurality of stages in the circumferential direction, and a plurality of protrusions formed in the circumferential direction; A plurality of main gears provided to rotate in engagement with the sector gears of the rotating body, respectively; A plurality of rods each connected to the main gears and having a sheet music fitted at an end thereof; A push switch controlling a driving of the motor by a user's operation; It is composed of a first limit switch operated by the protrusion of the rotating body and cooperating with the push switch to control the driving of the motor. According to the present invention, the structure of operating the rods for handing the sheet music by the cooperation of the sector gears and the main gear of the rotating body is very simple and compact, so that it can be easily placed and used on the existing music stand, and is easily carried. And can be stored. In addition, the limit switch, which is operated by the mechanical mechanism of the rotating body, cooperates with the push switch to control the driving of the motor, thereby smoothly and accurately controlling the turning of the sheet music, regardless of the timing of the push switch operation by the player. It can be effective.

Description

Automatic Sheet Music Equipment {AUTOMATIC MUSIC PAGE TURNER}

The present invention relates to a music score, and more particularly to an automatic sheet music apparatus that can automatically turn the sheet music one by one.

In general, when a player plays a musical instrument for a long time consisting of several pages of sheet music, the player plays the musical instrument by placing the sheet music on the score table and handing the sheet music one by one. In this way, it is not only cumbersome and inconvenient for the player to play the score directly, but also has a lot of trouble in playing because the player must pause the performance to turn the score. Accordingly, various types of automatic sheet music stands have been developed that can automatically pass music scores.

As an example, if you look at the automatic music stand of Republic of Korea Utility Model Publication No. 188700, the clip at the tip of the bar is fixed to each sheet of sheet music, the bar is connected to the gear roller of the fixed shaft, the gear roller is moved to the left and right of the music stand It is configured to rotate in engagement with the gear of the movable plate. In addition, the movable plate is configured to be movable left and right by a rack gear engaged with the movable gear mounted on the drive shaft of the motor.

When the movable plate is moved left and right by driving the motor, the automatic music stand of this technology is fixed to the clip while the gear roller engaged with the gear of the movable plate is rotated about the fixed shaft, and the bar is moved left and right by the rotation of the gear roller. Handing over the sheet music.

However, the automatic music rest of the conventional registered utility model No. 188700 has a structure in which the movable plate is moved to the left and right of the music stand, so the space for the movable plate is large is restricted in minimizing the configuration of the entire apparatus, and the music stand and the movable plate are integrated. Since it must be manufactured, the overall size of the music rest is significantly larger and the weight is heavier. In addition, since the automatic sheet music device is manufactured integrally with the music stand, there is a disadvantage that it is not easy to carry and cannot be applied to the manual music stand that is widely used in the past.

Moreover, the turning of the sheet music is performed by the on / off control of the motor by the button manipulation of the player. The control circuit for the on-off control of the motor must be provided with expensive electronic circuit components such as a microcomputer that can control the driving time of the motor according to the operation of the button, there is a disadvantage that the price is quite expensive.

The present invention has been devised to solve the various problems and disadvantages of the prior art as described above, the object of the present invention is a simple structure, made of small size can be easily placed on the music stand of the existing manual music stand or piano can be used In addition, to provide a practical automatic sheet music device that can be easily carried and stored.

Another object of the present invention is to provide an automatic sheet music apparatus capable of smoothly and accurately controlling the turning operation of sheet music without regard to a player's operation time by a mechanical mechanism.

Automatic musical apparatus according to the present invention to achieve the above objects and the housing; A motor installed inside the housing; A gear train transmitting a driving force of the motor; A cylindrical rotating body provided to be rotatable by a gear train and having a plurality of sector gears formed on the outer surface so as to form a plurality of stages in the circumferential direction, and a plurality of protrusions formed in the circumferential direction; A plurality of main gears provided to rotate in engagement with the sector gears of the rotating body, respectively; A plurality of rods each connected to the main gears and having a sheet music fitted at an end thereof; A push switch controlling a driving of the motor by a user's operation; It is composed of a first limit switch operated by the protrusion of the rotating body and cooperating with the push switch to control the driving of the motor.

1 is a perspective view showing a configuration in which the automatic sheet music device of the present invention is installed on a music stand,

Figure 2 is a perspective view showing the configuration of an automatic sheet music apparatus according to the present invention,

3 is a plan view partially showing a configuration of an automatic musical instrument according to the present invention;

Figure 4 is a cross-sectional view showing the configuration of an automatic sheet music apparatus according to the present invention,

5 is a circuit diagram showing an operation circuit of a motor used in the automatic musical apparatus according to the present invention,

6 is a view showing a related configuration of the seesaw switch used for switching the forward and reverse rotation of the motor in the automatic musical apparatus according to the present invention,

7A to 7E are diagrams for explaining the operation of the automatic musical score apparatus according to the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

10: housing 11: pedestal

20: motor 30: gear train

40: rotating body 42: drive gear

43a to 43d: sector gears 44a to 44d, 45a to 45d: protrusions

50a to 50d: main gear 60a to 60d: rod

70: push switch 73a, 73b: button

74 to 76: first to third contacts 77: changeover switch

80a, 80b: limit switch 81: operating plate

82 to 84: first to third contact 85: roller

90: power

Hereinafter, a preferred embodiment of an automatic musical instrument according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 and 7a to 7e are diagrams for explaining the automatic musical score apparatus according to the present invention.

First, referring to Figures 1 and 2, the automatic musical instrument of the present invention is provided with a housing (10). A narrow and long pedestal 11 is formed to place the sheet music 1 on the upper side of the housing 10, and the upper surface of the pedestal 11 can support the lower back side of the sheet music 1. The support jaw 12 is formed. The through hole 13 is formed in the front center of the housing 10, and the inclined surface 14 is formed in the left and right sides. In addition, the housing 10 has a narrow and long shape so that it can be placed on the support plate 2 of a conventional manual music stand or a music support plate such as a piano. When the housing 10 is placed on the upper surface of the supporting plate 2 and the rear side of the sheet music 1 is placed on the base 11 so that the lower side of the sheet music is supported by the support jaw 12, the sheet music 1 is placed on the music stand so that the player can easily see it. Is inclined to the front of the.

2 to 3, a motor 20 capable of forward and reverse rotation is installed in the housing 10, and the driving force of the motor 20 is transmitted by the gear train 30. The gear train 30 is a worm gear 31 mounted on the motor shaft 21 of the motor 20 and a first intermediate gear mounted on the first fixed shaft 32 so as to rotate in engagement with the worm gear 31. Field 33a, 33b and a second intermediate gear 35 mounted on the second fixed shaft 34 so as to rotate in engagement with the first intermediate gear 33b. The first fixed shaft 32 and the second fixed shaft 34 are fixedly mounted to the housing 10.

In addition, the second intermediate gear 35 of the gear train 30 rotates the cylindrical rotary body 40 proximate to the through hole 13 of the housing 10, and the rotary shaft 41 of the rotary body 40. Is fixedly mounted to the housing 10. The drive gear 42 which engages with the 2nd intermediate gear 35 of the gear train 30 in the lower part of the rotating body 40 is formed, and the outer surface has four or partially toothed teeth in this embodiment. The sector gears 43a to 43d are formed to form a plurality of stages in the circumferential direction. On the outer surface of the rotating body 40 above the drive gear 42, the plurality of protrusions 44a to 44d and the protrusions 45a to 45d extend in the circumferential direction in the same number as the number of the sector gears 43a to 43d. Each is formed in stages at equal intervals. The protrusions 44a to 44d act for the turning of the sheet music according to the forward rotation of the motor and the forward rotation of the motor, and the protrusions 45a to 45d are used for the turning of the sheet music due to the reverse rotation of the motor.

The automatic musical instrument of the present invention includes a plurality of main gears 50a to 50d which are engaged with and rotated in a corresponding relationship with the sector gears 43a to 43d of the rotating body 40. The main gears 50a to 50d rotate about the main fixed shaft 51 fixedly mounted to the housing 10, and the sector gears 43a to 43d described above have about 1 of the main gears 50a to 50d. It is formed so that it can make 2 turns. Spacers 52 are interposed between the main gears 50a to 50d to prevent mutual interference due to rotation of the main gears 50a to 50d, and the spacers 52 are provided on the main fixed shaft 51. It is fixedly mounted. A plurality of elongated rods 60a to 60d extending outwardly through the through holes 13 of the housing 10 are connected to one side of the main gears 50a to 50d, respectively. At the ends of the rods 60a to 60d, page holders 61a to 61d to which the sheet music 1 is fixedly fitted are provided, respectively. The rods 60a to 60d are connected to the main gears 50a to 50d so as to exclude interference with each other, and do not interfere with the housing 10 by the inclined surface 14 during left and right operation.

1 and 6, 7a to 7e, the automatic musical apparatus of the present invention is provided with a push switch 70 for controlling the driving of the motor 20 by a player or a user. The push switch 70 is mounted on the upper side of the case 71 so as to be biased by the spring 72 and has two operation buttons 73a and 73b for forward and reverse rotation of the motor 20. On the lower sides of the buttons 73a and 73b, the first contact 74 moves up and down by the manipulation of the buttons 73a and 73b, and the first contact 74 is positioned above and below the first contact 74, respectively. A second contact 75 and a third contact 76 are provided in electrical contact with 74 to output an on-off signal.

In this embodiment, the buttons 73a and 73b are operated by the player's foot, and one button 73a drives the motor 20 in the forward rotation so as to sequentially turn the sheet music 1 to the left. The other button 73b drives the motor 20 in reverse rotation so as to sequentially turn the music sheet 1 to the right.

The automatic musical instrument of the present invention is operated by the protrusions 44a to 44d; 45a to 45d of the rotating body 40, respectively, and cooperates with the push switch 70 to control forward and reverse rotation driving of the motor 20. A switch 80a and a second limit switch 80b are provided. As shown in FIG. 4, the first and second limit switches 80a and 80b are in direct contact with the projections 44a to 44d and 45a to 45d of the rotating body 40, respectively. 81, a first contact 82 interlocked with the operation plate 81, a second contact 83 electrically contacting the first contact 82 to output an on-off signal, and a first contact 82 ) And a third contact point 84 that is in electrical contact with and outputs an on-off signal. At the tip of the operating plate 81, a roller 85 which contacts the outer surface of the rotating body 40 and the projections 44a to 44d; 45a to 45d and rolls thereon is mounted.

5 and 7A, the motor 20, the first to third contacts 74 to 76 of the push switch 70, and the first to second limit switches 80a and 80b of the motor 20, the push switches 70, and the first and second limit switches 80a and 80b. The third contacts 82 to 84 and the power source 90 are connected in circuit by the wire 91. The motor 20 is connected to the first contact point 82 and the power supply 90 of the first and second limit switches 80a and 80b, and the power supply 90 is the second and third of the push switch 70. It is connected to the contacts 75 and 76, respectively. The second and third contacts 75 and 76 of the push switch 70 are connected to the second and third contacts 83 and 84 of the first and second limit switches 80a and 80b, respectively.

Referring to the configuration of the circuit for rotating the motor forward and backward with reference to FIGS. 5 and 6, the pressing piece 73a 'and the pressing piece 73b' which are integrally extended are formed on the button 73a and the button 73b, respectively. have. The buttons 73a and 73b are connected to a seesaw switch 77 which is well known as an example of the changeover switch via the pressing piece 73a 'and the pressing piece 73b'. As the pressing piece 73a 'and the pressing piece 73b' are alternately pressed, the seesaw switch 77 is connected to the power source 90 supplied to the motor 20, as indicated by the solid and dashed lines in FIG. Alternate the polarity. That is, when the motor 20 rotates forward by the action of the seesaw switch 77 of FIG. 5, the power supply 90 and the motor 20 are connected to each other to operate the first limit switch 80a as shown by the solid line. When the motor 20 rotates in reverse, the power supply 90 and the motor 20 are connected so that the polarity of the power supplied to the motor is changed, as shown by the dotted line, so that the second limit switch 80b operates. . In this embodiment, although the seesaw switch is taken as an example, other changeover switches may be used to change the polarity of the power supplied to the motor.

The following describes the operation of the automatic musical instrument of the present invention having such a configuration. Hereinafter, a description will be given based on the operation of the automatic sheet music device according to the forward rotation of the motor for passing the sheet music in the forward direction.

2, 3 and 7A together, FIG. 7A is an initial state in which the automatic musical instrument of the present invention is not driven. The roller 85 of the first limit switch 80a is in contact with the outer surface of the rotating body 40. At this time, the first contact 82 and the third contact 84 of the first limit switch 80a are turned on. Although the first contact 74 and the third contact 76 of the push switch 70 is turned off and the power source 90 and the motor 20 are connected to each other as shown by a dotted line in FIG. 5, The power supply 90 is not supplied to the motor 20 so that the motor 20 is in a stopped state.

Next, as shown in FIG. 3 and FIG. 7B, the player kicks the button of the push switch 70 in a state where the first contact point 82 and the third contact point 84 of the first limit switch 80a are turned on. When 73a is pressed, the first contact 74 of the push switch 70 is lowered so that the first contact 74 and the third contact 76 of the push switch 70 are turned on together with the button 73a. As the pressing piece 73a 'is lowered and the seesaw switch 77 shown by the solid line of FIG. 6 is pressed, the switching direction is switched, and as shown in FIG. 5, the power supply 90 and the motor 20 are connected. The power source 90 is supplied to the motor 20 to drive the motor 20. According to the driving of the motor 20, the driving force of the motor 20 is transmitted to the drive gear 42 of the rotating body 40 by the gear train 30, and the rotating body 40 is centered on the rotating shaft 41. Is rotated. Accordingly, the uppermost main gear 50a is engaged with and rotated by the uppermost sector gear 43a of the rotating body 40, and the uppermost rod 60a moves from right to left in accordance with the rotation of the main gear 50a. By rotating the music score (1) of the first page is turned over.

As shown in FIG. 7C, when the player 44 keeps pushing the push switch 70, when the protrusion 44a of the rotating body 40 comes into contact with the roller 85 of the first limit switch 80a, the push is performed. The first contact 82 and the third of the first limit switch 80a by the operation of the operating plate 81 in a state where the first contact 74 and the third contact 76 of the switch 70 are turned on. The power source 90 is cut off by the contact 84 being turned off and the first contact 82 and the second contact 83 being turned on. Accordingly, when the driving of the motor 90 is stopped and the turning operation of the sheet music 1 of the first page by the operation of the rod 60a is completed, the player continues to play while watching the sheet music of the next page.

As shown in FIG. 7D, when the player removes the operation force at the time of releasing the push switch 70 in the state of FIG. 7C and presses the button 73a of the push switch 70 at any time, the button ( 73a is returned to the initial position by the elastic force of the spring 72, and the push switch 70 of the first limit switch 80a is turned on while the first contact 82 and the second contact 83 are turned on. When the first contact 74 and the second contact 75 are turned on, the power supply 90 is supplied to the motor 20 again to drive the motor 20. When the rotor 40 is rotated by the driving of the motor 20, the rotor 40 rotates again.

Finally, referring to FIG. 7E, the rotating body 40 rotates so that the roller 85 passes through the protruding portion 44a so that the contact between the protrusion 44a of the rotating body 40 and the roller 85 is released. When the outer surface of the entire 40 is in contact, the operating plate 81 of the first limit switch 80a is elastic when the first contact 74 and the second contact 75 of the push switch 70 are turned on. It returns to the initial position by deformation, and at this time, the first contact point 82 and the second contact point 83 of the first limit switch 80a are turned off, and the first contact point 82 and the third contact point 84 are turned on. As a result, the power supply 90 is cut off again, and thus the driving of the motor 20 is stopped, thereby preparing for turning over the second page.

When the sheet music of the second page is to be turned over, the sector gear 43b positioned below the sector gear 43a and the main gear 50b and the main gear 50b which rotate in engagement with the sector gear 43b are rotated. By the interaction of the elongated rod 60b and the protrusion 44b, the series of operations shown and described in Figs. 7A to 7E are sequentially executed, and the sheet music of the second page is turned over.

In this way, the driving of the motor 90 is controlled by the cooperation of the push switch 70 and the first limit switch 80a, and all the sector gears 43a to 43d and the main gears 50a to 50d of the rotating body 40 are controlled. By activating the rods 60a to 60d by the cooperative operation, the turning operation of the sheet music 1 can be continuously performed.

On the other hand, while only the forward turning operation to the left side of the sheet music 1 has been described, the reverse flipping operation to the right side can be achieved by driving the motor 20 in the opposite direction to the turning operation of the sheet music 1. When the sheet music 1 is to be turned in the reverse direction, it is achieved by pressing the button 73b of the push switch 70. As the button 73b is pressed, the switching direction is switched by pressing the seesaw switch 77 in which the pressing piece 73b 'is shown by a dashed-dotted line, so that the power supply 90 and the motor 20 are shown as dotted lines in FIG. ) Is connected, the power of the opposite polarity 90 is supplied to the motor 20 to drive the motor 20 in the reverse direction. In this case, as shown in FIGS. 7A to 7E, the second limit switch 80b cooperates with the plurality of protrusions 45a to 45d to operate the automatic sheet music apparatus according to the present invention, so that the sheet music is returned. Since the returning operation of the sheet music 1 is the reverse of the turning operation and the direction only, the operation process is the same as that of the turning operation, so a detailed description of the returning operation of the sheet music is omitted.

The above-described embodiments are merely illustrative of one embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and may be appropriately changed within the scope of the claims. For example, the shape and structure of each component specifically shown in the embodiment of the present invention can be modified.

As described above, according to the automatic sheet music apparatus according to the present invention, a structure in which a rod that passes the sheet music one by one by the cooperation of the sector gear and the main gear of the rotating body is very simple and compactly manufactured, which is convenient for the existing music stand. It can be put on and used and can be easily carried and stored. In addition, the limit switch, which is operated by the mechanical mechanism of the rotating body, cooperates with the push switch to control the driving of the motor, thereby smoothly and accurately controlling the turning of the sheet music, regardless of the timing of the push switch operation by the player. It can be effective.

Claims (4)

A housing; A motor installed inside the housing; A gear train transmitting a driving force of the motor; A cylindrical rotating body provided to be rotatable by the gear train and having a plurality of sector gears formed on the outer surface so as to form a plurality of stages in the circumferential direction, and a plurality of protrusions formed in the circumferential direction; A plurality of main gears provided to rotate in engagement with the sector gears of the rotating body; A plurality of rods each connected to the main gears and having a sheet music fitted at an end thereof; A push switch controlling a driving of the motor by a user's operation; And a first limit switch operated by the protruding portion of the rotating body, the first limit switch cooperating with the push switch to control the driving of the motor. According to claim 1, wherein the upper surface of the housing is provided with a stand for placing a sheet music, the housing is an automatic sheet music device, characterized in that placed on the music stand. The motor of claim 1 or 2, wherein the plurality of protrusions are formed in two stages, and the push switch has two operation buttons, and is operated by the protrusions and cooperates with the push switch to drive the motor. And a second limit switch for controlling the switch, the shift switch cooperating with the operation buttons of the push switch to enable forward and reverse rotation of the motor. 4. The first contact of claim 3, wherein the push switch elastically moves between a first contact point and a third contact point connected to the first limit switch and the second push switch, and the first contact point and the third contact point. And a second contact point for connecting with the third contact point.