CN2132246Y

CN2132246Y - Device for turning to page of music score

Info

Publication number: CN2132246Y
Application number: CN 92231142
Authority: CN
Inventors: 关华
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-18
Filing date: 1992-08-18
Publication date: 1993-05-05
Anticipated expiration: 2002-08-18

Abstract

The utility model relates to a mechanical device for turning pages of music scores, which is controlled by electric pedals. The utility model comprises a machine frame, an electric speed reducer, a page-turning action mechanism and a control mechanism, wherein, the control mechanism comprises a relay control circuit which can make a direct-current motor convert forward and backward. The action mechanism comprises a wide gear, a screw-rod screw-nut mechanism and a screw-rod fixing mechanism driven by an output gear of the speed reducer. The lower end of a screw nut is provided with a group of gear shifting rods, one end of which is provided with page-turning shifting rods. The utility model has the advantages of reliable operation, convenient use, low manufacture cost, convenient generalization, etc.

Description

Device for turning to page of music score

The relevant music score music leaf turner of the utility model, specifically, relevant music score music leaf turner with foot-operated electrical control.

Vast piano practitioner or other multiple musical instrument practitioner thirst for having and can turn over spectrum arbitrarily and do not interrupt the music score music leaf turner practising or play, and as the helper of exercise, in addition, much less, such music leaf turner is also very useful to band's performance.

Therefore, the purpose of this utility model is to provide the music score music leaf turner that can turn over spectrum arbitrarily that adopts foot-operated electrical control and practicality.

According to the utility model music score music leaf turner, being fixed is placed near the music stand upper end, adopts foot-operated electrical control, comprising: frame; Be positioned at the motorized speed reducer on the frame; Turn over spectrum actuating mechanism and control gear thereof, this control gear comprises the control relay circuit that employing makes direct current motor rotating conversion, it is characterized in that described actuating mechanism comprises the wide gear by the output gear of speed reducer transmission; One end and described wide gear are assembled into one, install and fix the ut socket of a sector gear on its other end; Ut socket meshes, is fixed on the screw rod on the frame therewith; And one group along being parallel to the axis direction arranged spaced of described screw rod, its each end have respectively can with the tooth portion of described sector gear engagement, what its each other end had the minute hand bar respectively turns over the spectrum driving lever.

Followingly the utility model embodiment is described with reference to accompanying drawing.

To brief description of drawings.

Fig. 1 is the front view that schematically illustrates the band part section of the utility model music score music leaf turner general structure,

Fig. 2 is the vertical view of structure shown in Figure 1,

Fig. 3 is the left view of structure shown in Figure 1,

Fig. 4 schematically illustrates the control relay circuit that the utility model music score music leaf turner adopts.

Embodiment

At first referring to Fig. 1-3,14 is the utility model music score music leaf turner frame, output gear 11 with motorized speed reducer 12 drives wide gear 1 revolution, ut socket 3 with constant pitch, one end and wide gear 1 assembling form one, screw rod 2 in fixed installation one sector gear 4 on its other end and ut socket 3 engagements is fixed on the frame 14.When direct current motor is just changeed, when wide gear 1 and ut socket 3 and sector gear 4 are turned round together, meshing relation because of ut socket 3 and screw rod 2, make wide gear 1 ut socket 3 and sector gear 4 rise together or descend, meanwhile, because of sector gear 4 can be respectively identical with one group of shape, structure, along each tooth portion 15 of the gear driving lever of the axis direction arranged spaced that is parallel to screw rod 2 ₁15 ₅Be meshed, make gear driving lever 5 respectively ₁5 ₅Around stationary shaft 18 revolution, make the minute hand bar of holding under the arm in advance between every page of music score turn over the spectrum action respectively, and turn around for 3 times when ut socket, promptly rising is equivalent to the height of self pitch, though sector gear 4 successively with tooth portion 15 ₅15 ₁Be meshed, order is turned over the spectrum action, when making direct current motor 13 counter-rotatings, just can carry out the tipping spectrum action opposite with the gyratory directions of said gear driving lever.

In addition, as shown in Figure 2, also respectively in each tooth portion 15 ₁15 ₅And torque spring 16 is set between frame ₁16 ₅, diagram torque spring 16 ₅State representation be spring energy-storage state when maximum relatively, and represent sector gear 4 and gear driving lever 5 simultaneously ₅ Tooth portion 15 ₅Be in the central state of engagement, at this moment torque spring 16 ₅Help to turn over the spectrum action.Diagram torque spring 16 ₁State representation be the minimum relatively state of spring energy-storage, and expression sector gear 4 and gear driving lever 5 ₁ Tooth portion 15 ₁Meshed and finished the torque spring 16 of this moment ₁Help the music score that climbs over is pushed.

Below, with reference to Fig. 4 the above-mentioned control gear that turns over the spectrum action is described.

KM1 and KM1 ' are respectively and direct current motor M is just being changeed and keep the holding coil that M is just changeing;

KM11 and KM11 ' are respectively the holding coil that makes direct current motor M counter-rotating and keep the M counter-rotating;

With identical symbol KM1, the contact of interlocking switch is respectively organized in KM1 ' and KM11 and KM11 ' expression accordingly on this figure; SA1, SA2 represent the switch of left and right foot-operated control respectively,

SA3 represents the automatic stall switch of motor,

SA1 ' and SA2 ' represent upper limit and lower limit travel switch respectively.

In addition, by the SA3 that normally closed microswitch 9(promptly is equivalent to Fig. 4 is set on frame), be fixedly installed on the collision block 8 of fan portion one side of sector gear, can be on frame the rotating fork parts 17 of stationary shaft, being provided with on parts 17 can free rotating cylinder wheel 10, and when sector gear turns around for every time, collision block 8 contacts with cylinder wheel 10 bumps, thereby push switch 9 changes the state of switch 9 periodically.

When depressing foot-switch SA1, just make KM1, the energising of KM1 ' relay coil makes corresponding separately normally opened contact closure, and normally closed contact disconnects, and motor is just changeed.At this moment, even pin leaves foot-switch, motor is still kept normal revolution, by above-mentioned actuating mechanism, turns over the spectrum action.Once turning in the spectrum action cycle, collision block 8 is pushed once normally closed microswitch 9, is equivalent to make SA3 to disconnect, thereby makes the motor stall, because finished and once turn over spectrum action this moment, and one page music score that is climbed over is subjected to the effect of torque spring 16 and is pressed.When depressing foot-switch SA1 again, promptly repeat above-mentioned action.

In addition, when setting SA1 is left food switch, SA2 is the right threading switch, therefore, by above narration, can understand people can carry out playing exercise or play, and need not that others helps can be arbitrarily or carry out from left to right arbitrarily or dextrosinistrally turn over the spectrum action page by page, and can control by foot-operated, easy to operate, and reliable in action, simple in structure, low cost of manufacture, and can be according to same principle, design different structural shapes according to different use occasions, for example vertical, horizontal etc.

Claims

1, music score music leaf turner is placed near the music stand upper end, adopts foot-operated electrical control to comprise: frame; Be positioned at the motorized speed reducer on the frame; Turn over spectrum actuating mechanism and control gear thereof, described control gear comprises the control relay circuit that makes direct current motor carry out the rotating conversion, it is characterized in that described actuating mechanism comprises: by the wide gear of output gear of speed reducer transmission, one end and described wide gear form one, the ut socket that on its other end, has a sector gear, ut socket engagement therewith, be fixed on the screw rod on the frame, one group along being parallel to described screw axis direction arranged spaced, its each end have respectively can with the tooth portion of described sector gear engagement, its each other end is the gear driving lever of a fixedly connected minute hand bar respectively.