CN108621631B

CN108621631B - Paper sucking and pushing unit in piano music score turning system

Info

Publication number: CN108621631B
Application number: CN201810526134.5A
Authority: CN
Inventors: 曹泓
Original assignee: Hunan City University
Current assignee: Hunan City University
Priority date: 2018-05-28
Filing date: 2018-05-28
Publication date: 2021-02-26
Anticipated expiration: 2038-05-28
Also published as: CN108621631A

Abstract

The invention belongs to the technical field of musical instruments, and relates to a paper pushing unit in a piano music score turning system, which solves the problem that the sound quality of a piano is influenced by the existing music score turning device. This music book system of turning over includes the music book frame, and the music book frame includes bottom plate and panel, and this paper pushing unit pushes away the paper footboard including pushing away the paper footboard and pushing away the paper cable, pushes away the paper footboard and sets up in the piano bottom, and the lower extreme that pushes away the paper cable is connected with the paper footboard, and the upper end is connected with the pendulum rod, and the upper end of pendulum rod articulates on the panel and is provided with canceling release mechanical system between the two, and the lower extreme of pendulum rod can swing the music book top to. The piano tone quality is little influenced when the music score is turned.

Description

Paper sucking and pushing unit in piano music score turning system

Technical Field

The invention belongs to the technical field of musical instruments, and relates to a paper sucking and pushing unit in a piano music score turning system.

Background

With the continuous popularization of pianos, more and more people learn the pianos, and the problem of music score turning exists all the time when the pianos are played. No matter whether a piano is played or other musical instruments are performed, both hands of a musician are busy playing all the time, and no free hands are used for turning music scores. For example, when a piano is played, a pianist finishes playing a whole page of music score, and has to stop to reach and extend hands to turn pages in order to see the next page of the staff, so that the rhythm of playing music is interrupted, and thus the music cannot be smoothly played.

In order to solve the above problems, chinese patent CN 102815116B discloses an automatic music score turning device for piano, which comprises a bottom plate, a paper twisting mechanism, a paper twisting shaft mechanism, a transmission shaft mechanism, a paper pushing mechanism and a motor, wherein the paper twisting shaft mechanism is installed above the paper twisting mechanism, the motor is installed above the paper twisting shaft mechanism, the motor is connected with a page turning control system, the paper pushing mechanism is installed above the left side of the paper twisting shaft mechanism, and the transmission shaft mechanism is installed between the paper pushing mechanism and the paper twisting shaft mechanism. When the music book page turning device is used, the music book can be turned automatically only by slightly stepping on the pedal plate by a left foot.

Although the automatic music score turning device disclosed in the above patent can turn the pages of the music score, the following drawbacks still exist: in the device, a motor is used as a driving source, and as is well known, when the piano is played, additional high-frequency vibration can influence the tone quality of the piano, and when the motor rotates at a high speed to drive each gear to rotate, the playing of the piano is certainly influenced, and the rotation of the motor depends on a power supply, so that a storage battery needs to be additionally arranged on the piano or the piano is used in a place with an external power supply, so that the device is high in cost and inconvenient to use.

Disclosure of Invention

The invention aims to solve the problems in the prior art, provides a paper pushing unit in a piano score turning system, and aims to solve the technical problems that: how to reduce the influence on the piano playing tone quality when turning over the music score makes the music score turning system applicable to the actual playing.

The purpose of the invention can be realized by the following technical scheme:

a paper sucking and pushing unit in a piano music score turning system comprises a music score frame, wherein the music score frame comprises a bottom plate capable of being fixed on a piano and a panel for placing a music score, and the bottom plate is fixedly connected with the panel; its characterized in that, push away the paper unit including pushing away the paper footboard and pushing away the paper cable, it sets up in the piano bottom to push away the paper footboard, the lower extreme that pushes away the paper cable is connected with the paper footboard, the upper end that pushes away the paper cable is connected with the pendulum rod, the upper end of pendulum rod articulates on the panel and is provided with canceling release mechanical system between the two, the lower extreme of pendulum rod can swing the music book top on to the panel.

In the paper pushing unit in the piano music score turning system, a plurality of second wire pipes are sleeved on the paper pushing inhaul cables and fixed on the piano.

In the paper pushing unit in the piano score turning system, the lower end of the paper pushing pedal is hinged to the base through a second pin shaft, a second torsion spring is sleeved on the second pin shaft, and two ends of the second torsion spring are respectively connected with the base and the paper pushing pedal.

In the paper pushing unit in the piano music score turning system, the upper end of the swing rod is hinged to the panel through a third pin shaft, the reset mechanism comprises a third torsion spring sleeved on the third pin shaft, and two ends of the third torsion spring are respectively connected with the swing rod and the panel.

In the paper pushing unit in the piano score turning system, the lower end of the swing rod is provided with a positioning pin, a roller is rotatably arranged on the positioning pin, and fluff is arranged on the outer side wall of the roller.

In the paper pushing unit in the piano music score turning system, the paper pushing unit further comprises a pressing arm, a fixed shaft, a pressing wheel and a third pressure spring, one end of the pressing arm is fixed at the lower end of the oscillating bar, the pressing wheel is sleeved on the fixed shaft, and two ends of the fixed shaft are connected with the pressing arm through the third pressure spring.

Compared with the prior art, the invention has the following advantages:

this application does not use driving pieces such as motor, consequently, can not influence the tone quality that the piano was played because of the high-frequency vibration of motor to can not rely on the power, can use in arbitrary occasion.

Drawings

Fig. 1 is a schematic structural diagram of the spectrum turning system.

Fig. 2 is a schematic structural view of the spectrum frame.

Fig. 3 is a partially enlarged view of a groove portion of fig. 1.

Fig. 4 is a partially enlarged view of a portion of the swing link of fig. 1.

FIG. 5 is a schematic view of the structure of the paper suction pedal and the paper pushing pedal.

In the figure, 1, a bottom plate; 2. a panel; 3. a sleeve; 4. a piston; 5. a vent hole; 6. a paper suction pull cable; 7. a paper suction pedal; 8. a paper pushing pedal; 9. a paper pushing inhaul cable; 10. a swing rod; 11. a line pipe I; 12. a second line pipe; 13. a groove; 14. a first pressure spring; 15. a limiting bulge; 16. a second pressure spring; 17. a strip-shaped through hole; 18. a breather pipe; 19. a first pin shaft; 20. a base; 21. a music score; 22. a first torsion spring; 23. a second pin shaft; 24. a second torsion spring; 25. a boss; 26. a third pin shaft; 27. a third torsion spring; 28. a rod body; 29. positioning pins; 30. a drum; 31. fluff; 32. pressing the arm; 33. a fixed shaft; 34. a pinch roller; 35. and a third pressure spring.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the music score turning system comprises a music score frame, a paper suction unit and a paper pushing unit; wherein, the music stand is including can be fixed in bottom plate 1 on the piano and be used for placing music book 21's panel 2, and bottom plate 1 and panel 2 link firmly mutually. The base plate 1 may be secured to the piano by fasteners such as bolts, or other fastening means known in the art may be used.

As shown in fig. 3, the paper suction unit includes a sleeve 3 and a piston 4, the sleeve 3 is disposed on the panel 2, one end of the sleeve 3 has a vent hole 5 facing the panel 2, an inner end of the piston 4 is slidably inserted into the sleeve 3, and the inner end of the piston 4 and the sleeve 3 are sealed. In this embodiment, a sealing ring may be disposed between the inner end of the piston 4 and the sleeve 3, and as the structure of the syringe in the prior art is similar, the syringe may slide relatively and have a certain friction force therebetween, and the sealing performance may be ensured. The outer end of the piston 4 is connected with a paper-absorbing pull cable 6, and the bottom of the piano is provided with a paper-absorbing pedal 7 which can drive the paper-absorbing pull cable 6 to move.

Specifically, the paper-absorbing inhaul cable 6 is sleeved with a plurality of first wire pipes 11, and the first wire pipes 11 are fixed on the piano. For reasons of space, only a part of the conduit pipe 11 is marked in the attached drawings, and when the music score turning device is specifically installed on a piano, the corresponding conduit pipe 11 can be selected and fixed on the piano through fasteners such as bolts and the like according to the shape and the size of the actual piano, or other fixing modes can be adopted, and the fixing mode is not limited.

Specifically, the panel 2 is provided with a groove 13 in the horizontal direction, the sleeve 3 is arranged in the groove 13, the upper end of the paper suction cable 6 is connected with the outer end of the piston 4, and a first compression spring 14 is arranged between the outer end surface of the piston 4 and the left end of the groove 13. The middle part of recess 13 is provided with spacing arch 15, and sleeve 3 slides and sets up between the right-hand member of recess 13 and spacing arch 15, is provided with pressure spring two 16 between the left end of sleeve 3 and the spacing arch 15. A strip-shaped through hole 17 is formed in the downward side of the groove 13, one end of the sleeve 3 is connected with a vent pipe 18, and the vent pipe 18 penetrates through the strip-shaped through hole 17 and can slide along the strip-shaped through hole 17. The bottom of piano is provided with base 20, and the lower extreme of inhaling paper footboard 7 articulates on base 20 through round pin axle one 19, and the cover is equipped with torsional spring one 22 on round pin axle one 19, and the both ends of torsional spring one 22 are connected with inhaling paper footboard 7 and base 20 respectively, and the upper end of inhaling paper footboard 7 is the free end.

Under the action of the second compression spring 16, the right end of the sleeve 3 is abutted against the right end of the groove 13 under normal conditions, the inner end of the piston 4 is close to the right end of the sleeve 3 under the action of the first compression spring 14, and the vent pipe 18 is close to the upper right corner of the music score 21 but not right above the music score. Preferably, the stiffness coefficient of the first pressure spring 14 can be designed to be larger than that of the second pressure spring 16, when paper needs to be sucked, the paper sucking pedal 7 is stepped downwards, the paper sucking pedal 7 can pull the paper sucking inhaul cable 6 to move, and further pull the outer end of the piston 4 to move leftwards, due to the fact that the sealing ring is arranged between the inner end of the piston 4 and the sleeve 3, the piston 4 moves leftwards, the sleeve 3 can be driven to compress the second pressure spring 16 to move leftwards, and in the process, the vent pipe 18 moves leftwards along the strip-shaped through hole 17 to be located right above the upper right corner of the music score 21; the air suction pedal is continuously stepped on, the sleeve 3 does not move leftwards any more due to the design of the limiting protrusion 15, the piston 4 continuously compresses the first pressure spring 14 to move leftwards under the action of the paper suction inhaul cable 6, the volume of a cavity in the sleeve 3 is reduced, pressure difference negative pressure is generated inside and outside the sleeve 3, and the upper right corner of the music score 21 can be sucked up by the vent pipe 18, namely the paper suction process. When paper suction is not needed, only the paper suction pedal 7 needs to be loosened, the sleeve 3 can move rightwards to reset under the action of the second compression spring 16, the piston 4 can move rightwards under the action of the first compression spring 14 to enable the volume of the cavity in the sleeve 3 to be reduced, and the paper suction pedal 7 can be lifted to reset under the action of the first compression spring 22.

As shown in fig. 4, the paper pushing unit includes a paper pushing pedal 8 and a paper pushing cable 9, the paper pushing pedal 8 is disposed at the bottom of the piano, the lower end of the paper pushing cable 9 is connected to the paper pushing pedal 8, in this embodiment, a plurality of wire pipes 12 are sleeved on the paper pushing cable 9, and the wire pipes 12 are fixed on the piano. The upper end of the paper pushing inhaul cable 9 is connected with a swing rod 10, the upper end of the swing rod 10 is hinged to the panel 2, a reset mechanism is arranged between the swing rod and the panel 2, and the lower end of the swing rod 10 can swing above a music score 21 on the panel 2. In this embodiment, the upper end of the swing rod 10 is hinged to the panel 2 through a third pin 26, the reset mechanism includes a third torsion spring 27 sleeved on the third pin 26, and two ends of the third torsion spring 27 are respectively connected to the swing rod 10 and the panel 2.

Preferably, the paper pushing unit further comprises a pressing arm 32, a fixed shaft 33, a pressing wheel 34 and a pressing spring III 35, one end of the pressing arm 32 is fixed at the lower end of the swing rod 10, the pressing wheel 34 is sleeved on the fixed shaft 33, and two ends of the fixed shaft 33 are connected with the pressing arm 32 through the pressing spring III 35. The lower end of the swing link 10 is provided with a positioning pin 29, the positioning pin 29 is rotatably provided with a roller 30, and the outer side wall of the roller 30 is provided with fluff 31. The lower end of the paper pushing pedal 8 is hinged to the base 20 through a second pin shaft 23, a second torsion spring 24 is sleeved on the second pin shaft 23, and two ends of the second torsion spring 24 are connected with the base 20 and the paper pushing pedal 8 respectively.

Under the normal condition, the swinging rod 10 is positioned at the upper right of the middle part of the music score 21 under the action of the third torsion spring 27.

When the paper sucking unit sucks the upper right corner of the music score 21, the paper pushing pedal 8 is stepped, the paper pushing inhaul cable 9 drives the swing rod 10 to swing clockwise, and the sucked paper is pushed to the other side, so that page turning is realized. The roller 30 and the fluff 31 are designed on the swing rod 10, so that the damage to paper when the swing rod 10 is in contact with the music score 21 can be effectively reduced; in the process, the pressing wheel 34 moves synchronously with the roller 30, after the sheets are turned over, the music score 21 can be pressed through elasticity, and the phenomenon that the turned sheets return due to the elasticity of the joints of the left and right sheets of the music score 21 is avoided, for example, when people do not pay attention to pressing the middle of a thick book at ordinary times, some sheets can automatically turn pages due to the elasticity of the joints.

As shown in fig. 5, the lower end of the paper pushing pedal 8 is hinged to the base 20 through a second pin 23, a second torsion spring 24 is sleeved on the second pin 23, and two ends of the second torsion spring 24 are respectively connected with the base 20 and the paper pushing pedal 8. Preferably, the paper pushing pedal 8 is located below the free end of the paper sucking pedal 7, the free end of the paper sucking pedal 7 is provided with a boss 25 which can abut against the paper pushing pedal 8, the boss is detachably connected with the paper sucking pedal 7, a threaded hole can be designed in the paper sucking pedal 7 in a specific connection mode, the boss is designed into a stud shape, and the distance between the lower end of the boss and the paper pushing pedal 8 can be adjusted through rotation, even the boss is detached. The benefit of this design lies in, during the use, the player steps on earlier and inhales paper footboard 7, because bellied lower extreme and push away and have a certain distance between the paper footboard 8, consequently, this section in-process, pushes away paper footboard 8 and does not move, and inhales paper footboard 7 and upwards inhales the upper right corner of music book 21 through the motion, and at the in-process that inhales, bellied lower extreme with push away paper footboard 8 and contact, drive pendulum rod 10 and push away paper, accomplish and turn over the page. As above, only one foot is needed to complete the page turning. As for how the two pedals are matched, the steps of paper suction and paper pushing are more smoothly matched, and the distance between the lower end of the bulge and the paper pushing pedal 8 can be adjusted according to actual conditions. As another scheme, the paper suction pedal 7 and the paper pushing pedal 8 may be designed in parallel without the projection, and the paper suction pedal 7 is firstly treaded by the left foot to suck the paper, and then the paper pushing pedal 8 is treaded by the right foot to push the paper, so that the purpose of the present invention can be achieved.

In conclusion, compared with the prior art, the piano playing device has the advantages that driving parts such as the motor are not used, so that the quality of the piano playing sound cannot be influenced by the high-frequency vibration of the motor, the power supply cannot be relied on, and the piano playing device can be used in any occasions; in addition, the music score 21 paper is sucked up in an adsorption mode, and the music score 21 paper cannot be damaged.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A paper sucking and pushing unit in a piano music score turning system comprises a music score frame, wherein the music score frame comprises a bottom plate (1) capable of being fixed on a piano and a panel (2) for placing a music score (21), and the bottom plate (1) is fixedly connected with the panel (2); the piano is characterized in that the paper pushing unit comprises a paper pushing pedal (8) and a paper pushing inhaul cable (9), the paper pushing pedal (8) is arranged at the bottom of the piano, the lower end of the paper pushing inhaul cable (9) is connected with the paper pushing pedal (8), the upper end of the paper pushing inhaul cable (9) is connected with a swing rod (10), the upper end of the swing rod (10) is hinged to the panel (2), a reset mechanism is arranged between the swing rod and the panel, and the lower end of the swing rod (10) can swing to the position above a music score (21) on the panel (2); the swing rod (10) comprises a rod body (28), a positioning pin (29) is arranged at the lower end of the rod body (28), a roller (30) is rotatably arranged on the positioning pin (29), and fluff (31) is arranged on the outer side wall of the roller (30); the swing rod (10) further comprises a pressing arm (32), a fixed shaft (33), a pressing wheel (34) and a third pressure spring (35), one end of the pressing arm (32) is fixed at the lower end of the rod body (28), the pressing wheel (34) is sleeved on the fixed shaft (33), and two ends of the fixed shaft (33) are connected with the pressing arm (32) through the third pressure spring (35);

the paper suction unit comprises a sleeve and a piston, the sleeve is arranged on the panel, one end of the sleeve is provided with a vent hole facing the panel, the inner end of the piston can be inserted in the sleeve in a sliding manner, and the inner end of the piston and the sleeve are sealed; a sealing ring can be arranged between the inner end of the piston and the sleeve; the outer end of the piston is connected with a paper suction pull rope, and the bottom of the piano is provided with a paper suction pedal capable of driving the paper suction pull rope to move; the paper suction inhaul cable is sleeved with a plurality of first wire pipes, and the first wire pipes are fixed on the piano; a groove is formed in the panel along the horizontal direction, the sleeve is arranged in the groove, the upper end of the paper suction inhaul cable is connected with the outer end of the piston, and a first pressure spring is arranged between the outer end face of the piston and the left end of the groove; a limiting bulge is arranged in the middle of the groove, the sleeve is arranged between the right end of the groove and the limiting bulge in a sliding mode, and a second pressure spring is arranged between the left end of the sleeve and the limiting bulge; a strip-shaped through hole is formed in the downward side of the groove, one end of the sleeve is connected with a vent pipe, and the vent pipe penetrates through the strip-shaped through hole and can slide along the strip-shaped through hole; the bottom of piano is provided with the base, and the lower extreme of inhaling the paper footboard articulates on the base through round pin axle one, and the cover is equipped with torsional spring one on the round pin axle one, and the both ends of torsional spring one are connected with inhaling paper footboard and base respectively, and the upper end of inhaling the paper footboard is the free end.

2. The absorbing and pushing unit in the piano music score turning system according to claim 1, wherein the paper pushing guy cable (9) is sleeved with a plurality of second wire pipes (12), and the second wire pipes (12) are fixed on the piano.

3. The paper sucking and pushing unit in the piano score turning system according to claim 2, wherein the lower end of the paper pushing pedal (8) is hinged to the base (20) through a second pin shaft (23), a second torsion spring (24) is sleeved on the second pin shaft (23), and two ends of the second torsion spring (24) are respectively connected with the base (20) and the paper pushing pedal (8).

4. The suction and push paper unit in the piano score turning system according to claim 3, wherein the upper end of the swing link (10) is hinged on the panel (2) through a third pin shaft (26), the reset mechanism comprises a third torsion spring (27) sleeved on the third pin shaft (26), and two ends of the third torsion spring (27) are respectively connected with the swing link (10) and the panel (2).