CN108749389B

CN108749389B - Paper suction unit in piano music score turning system

Info

Publication number: CN108749389B
Application number: CN201810526117.1A
Authority: CN
Inventors: 曹泓
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd
Priority date: 2018-05-28
Filing date: 2018-05-28
Publication date: 2020-04-17
Anticipated expiration: 2038-05-28
Also published as: CN108749389A

Abstract

The invention belongs to the technical field of musical instruments, and relates to a paper suction unit in a piano music score turning system, which solves the problems that the tone quality of a piano is influenced and a music score is damaged by the conventional music score turning device. This music score system of turning over includes the music stand, and the music stand includes bottom plate and panel, and this paper unit of inhaling includes sleeve and piston, and the sleeve sets up on the panel, and the sleeve is equipped with the air vent, and the piston is inner to be pegged graft in the sleeve, and the outer end of piston is connected with inhales the paper cable, and the piano bottom is provided with the paper footboard of inhaling that can drive to inhale the paper cable and remove. The invention can not damage the music score when turning the music score.

Description

Paper suction unit in piano music score turning system

Technical Field

The invention belongs to the technical field of musical instruments, and relates to a paper suction 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: the music score is rubbed by the small paper rubbing wheel, the paper cannot be rubbed up if the force is small in the process, the music score is easily rubbed and broken if the force is large, and the friction force between the small paper rubbing wheel and the paper is small for the music score paper with a smooth surface, so that the paper cannot be rubbed up. In conclusion, the above-mentioned music score turning device still has a big problem when in actual use, and can not be popularized and used in practice.

Disclosure of Invention

The invention aims to solve the problems in the prior art, provides a paper suction unit in a piano score turning system, and aims to solve the technical problems that: how to reduce the damage to music sheets when the music is turned.

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

a paper suction 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; the piano is characterized in that 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 an air hole facing the panel, the inner end of the piston is inserted into the sleeve in a sliding manner, the inner end of the piston and the sleeve are sealed mutually, the outer end of the piston is connected with a paper suction pull rope, and a paper suction pedal capable of driving the paper suction pull rope to move is arranged at the bottom of the piano.

In foretell piano music book system of turning over, it is equipped with a plurality of roots spool one to inhale the last cover of paper cable, spool one is fixed in on the piano.

In the paper suction unit in the piano music score turning system, a groove is formed in the panel in 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.

In the paper suction unit in the piano music score turning system, the middle part of the groove is provided with a limiting bulge, the sleeve is arranged between the right end of the groove and the limiting bulge in a sliding manner, and a second pressure spring is arranged between the left end of the sleeve and the limiting bulge.

In the paper suction unit in the piano music score turning system, 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.

In foretell piano music book system of turning over inhales paper unit, the bottom of piano is provided with the base, inhale the lower extreme of paper footboard and articulate on the base through round pin axle one, the cover is equipped with torsional spring one on the round pin axle one, the both ends of torsional spring one are connected with inhaling paper footboard and base respectively, the upper end of inhaling the paper footboard is the free end.

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

this application is inhaled the paper of music book through absorbent mode, can not cause the damage to the music book paper.

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 suction 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 suction unit comprises a sleeve (3) and a piston (4), the sleeve (3) is arranged on a panel (2), one end of the sleeve (3) is provided with a vent hole (5) facing the panel (2), the inner end of the piston (4) is inserted into the sleeve (3) in a sliding manner, the inner end of the piston (4) and the sleeve (3) are sealed, the outer end of the piston (4) is connected with a paper suction pull rope (6), and the bottom of the piano is provided with a paper suction pedal (7) capable of driving the paper suction pull rope (6) to move; a groove (13) is formed in the panel (2) in the horizontal direction, the sleeve (3) is arranged in the groove (13), the upper end of the paper suction inhaul cable (6) is connected with the outer end of the piston (4), and a first pressure spring (14) is arranged between the outer end face of the piston (4) and the left end of the groove (13); a limiting bulge (15) is arranged in the middle of the groove (13), the sleeve (3) is arranged between the right end of the groove (13) and the limiting bulge (15) in a sliding mode, a second pressure spring (16) is arranged between the left end of the sleeve (3) and the limiting bulge (15), and the stiffness coefficient of the first pressure spring (14) can be designed to be larger than that of the second pressure spring (16); one side of the groove (13) facing downwards is provided with a strip-shaped through hole (17), 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).

2. The paper absorbing unit in the piano music score turning system according to claim 1, wherein the paper absorbing guy cable (6) is sleeved with a plurality of first wire pipes (11), and the first wire pipes (11) are fixed on the piano.

3. The paper absorbing unit in the piano score turning system according to claim 1, wherein a base (20) is arranged at the bottom of the piano, the lower end of the paper absorbing pedal (7) is hinged to the base (20) through a first pin shaft (19), a first torsion spring (22) is sleeved on the first pin shaft (19), two ends of the first torsion spring (22) are respectively connected with the paper absorbing pedal (7) and the base (20), and the upper end of the paper absorbing pedal (7) is a free end.