CN105741827B - Integrated automatic opening and closing music stand and key cover - Google Patents
Integrated automatic opening and closing music stand and key cover Download PDFInfo
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- CN105741827B CN105741827B CN201610253760.2A CN201610253760A CN105741827B CN 105741827 B CN105741827 B CN 105741827B CN 201610253760 A CN201610253760 A CN 201610253760A CN 105741827 B CN105741827 B CN 105741827B
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- music stand
- key cover
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- pivot
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- 238000006243 chemical reaction Methods 0.000 description 2
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- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10G—REPRESENTATION OF MUSIC; RECORDING MUSIC IN NOTATION FORM; ACCESSORIES FOR MUSIC OR MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR, e.g. SUPPORTS
- G10G7/00—Other auxiliary devices or accessories, e.g. conductors' batons or separate holders for resin or strings
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C3/00—Details or accessories
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
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- Electrophonic Musical Instruments (AREA)
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Abstract
The invention provides an integrated automatic opening and closing music stand and a key cover, which comprise a front key cover, wherein the front key cover is provided with a pivot, the front key cover is connected with a key cover bearing seat on a music instrument body through the pivot, the music stand is provided with the pivot, and the music stand is connected with the music stand bearing seat on the front key cover through the pivot; the pivot of the front key cover is connected with a worm wheel of the key cover worm wheel and worm mechanism, and the key cover motor is connected with a worm of the key cover worm wheel and worm mechanism; the pivot of the music stand is connected with the worm wheel of the music stand worm gear mechanism, and the music stand motor is connected with the worm of the music stand worm gear mechanism. Through adopting above structure, can realize the automation of music stand and fallboard and open and shut, improve the degree of automation of piano.
Description
Technical Field
The invention relates to the field of piano parts, in particular to an integrated automatic opening and closing music stand and a key cover
Background
Before playing the piano, the key cover is manually opened, and then the music stand is opened for placing the music score. The actions of opening the key cover and the music stand are manual opening and closing, the automation degree is low, time and labor are wasted, and the music stand is not humanized, so that inconvenience is brought to a user. At present, no music stand and no key cover capable of being automatically opened and closed exist.
Disclosure of Invention
The invention aims to solve the technical problem of providing an integrated automatic opening and closing music stand and a key cover, solving the problems that the existing key cover and the music stand need to be opened and closed manually and the automation degree is low, and bringing convenience to users.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: an integrated automatic opening and closing music stand and a key cover comprise a front key cover, wherein a pivot is arranged on the front key cover, the front key cover is connected with a key cover bearing seat on a music stand body through the pivot, a pivot is arranged on the music stand, and the music stand is connected with the music stand bearing seat on the front key cover through the pivot;
the pivot of the front key cover is connected with a worm wheel of the key cover worm wheel and worm mechanism, the key cover motor is connected with a worm of the key cover worm wheel and worm mechanism, the key cover motor and the music stand motor lose power, and the positions of the front key cover and the music stand can be continuously maintained;
the pivot of the music stand is connected with the worm wheel of the music stand worm gear mechanism, and the music stand motor is connected with the worm of the music stand worm gear mechanism.
A key cover limit switch is arranged at the rotation limit position of the front key cover;
a music stand limit switch is arranged at the rotation limit position of the music stand;
the keyboard cover motor, the music stand motor, the keyboard cover limit switch and the music stand limit switch are electrically connected with the control device, a normally open contact is arranged on the keyboard cover limit switch at the opening limit position of the front keyboard cover and is connected in series in the opening control circuit of the music stand motor, and the music stand motor can drive the music stand to open only after the keyboard cover limit switch at the opening limit position of the current keyboard cover is triggered and maintained;
and a normally open contact is arranged on the music stand limit switch at the music stand closing limit position and is connected in series in a closing control circuit of the key cover motor, and the key cover motor can drive the front key cover to close only after the music stand limit switch at the music stand closing limit position is triggered and maintained.
And the control switch is electrically connected with the control device in a wireless or wired mode.
The control device adopts a singlechip control device.
And a PWM control circuit is arranged in the control device.
The key cover motor and the music stand motor are torque motors and output power at constant torque.
According to the integrated automatic opening and closing music stand and the key cover, the automatic opening and closing of the music stand and the key cover can be realized by adopting the structure, and the automation degree of a piano is improved.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a perspective view of a front keycap in accordance with the present invention.
Fig. 2 is a perspective view of the music stand according to the present invention.
In the figure: the music score reading device comprises a front key cover 1, a music score frame bearing seat 2, a music score frame 3, a music score frame limit switch 4, a music score frame worm gear mechanism 5, a music score frame motor 6, a control device 7, a control switch 8, a power supply 9, a key cover bearing seat 10, a key cover limit switch 11, a key cover worm gear mechanism 12, a key cover motor 13 and a music score body 14.
Detailed Description
As shown in fig. 1~2, an integrated automatic open-close music stand and fallboard comprises a front fallboard 1, wherein a pivot is arranged on the front fallboard 1, the front fallboard 1 is connected with a fallboard bearing seat 10 on a piano body 14 through the pivot, and the front fallboard 1 rotates around the pivot to realize opening and closing. The music stand 3 is provided with a pivot, the music stand 3 is connected with the music stand bearing seat 2 on the front key cover 1 through the pivot, and the music stand 3 rotates around the pivot to realize opening and closing.
The pivot of the front key cover 1 is connected with the worm wheel of the key cover worm wheel and worm mechanism 12, and the key cover motor 13 is connected with the worm of the key cover worm wheel and worm mechanism 12; with this structure, the fallboard motor 13 effects opening and closing of the front fallboard 1 through the fallboard worm gear mechanism 12.
The pivot of the music stand 3 is connected with the worm wheel of the music stand worm wheel and worm mechanism 5, and the music stand motor 6 is connected with the worm of the music stand worm wheel and worm mechanism 5. The music stand motor 6 realizes the opening and closing of the music stand 3 through the music stand worm gear mechanism 5. With the above-described structure, the front fallboard 1 and the music rack 3 have a base for automatically opening and closing.
When the music stand is used, firstly, the key cover motor 13 acts to enable the worm to drive the worm wheel to rotate, so that the front key cover 1 is driven to be opened, and then the music stand motor 6 acts to drive the music stand 3 to rotate and open through the music stand worm wheel and worm mechanism 5. The adoption of the key cover worm gear mechanism 12 and the music stand worm gear mechanism 5 has the self-locking effect, and even if the key cover motor 13 and the music stand motor 6 lose power, the positions of the front key cover 1 and the music stand 3 can be continuously maintained, and the sudden closing can not be caused, thereby causing injury to a user.
In a preferred scheme, as shown in fig. 1, a key cover limit switch 11 is arranged at the rotation limit position of the front key cover 1; with this structure, when the key top 1 is opened or closed, the key top motor 13 stops when the key top limit switch 11 is touched.
In a preferred scheme, as shown in fig. 2, a music stand limit switch 4 is arranged at the rotation limit position of a music stand 3; with the structure, when the music stand 3 is opened and closed, the music stand motor 6 stops operating when the music stand limit switch 4 is touched.
With the above-described structure, the front fallboard 1 and the music rack 3 are controlled to rotate within a set spatial range.
The key cover motor 13, the music stand motor 6, the key cover limit switch 11 and the music stand limit switch 4 are electrically connected with the control device 7. The control device 7 adopts a singlechip control device. In the embodiment, an STM32F103RCT6 chip is adopted, and the control in the embodiment adopts a logic interlocking structure, so that misoperation is avoided. For example, a logical normally open contact is arranged in the key cover limit switch 11 at the opening limit position of the front key cover 1, and the normally open contact is connected in series in the opening control circuit of the music stand motor 6, i.e., the music stand motor 6 can drive the opening of the music stand 3 only after the key cover limit switch 11 at the opening limit position of the current key cover 1 is triggered and maintained.
Correspondingly, a logical normally open contact is arranged on the music stand limit switch 4 at the closing limit position of the music stand 3, the normally open contact is connected in series in a closing control circuit of the key cover motor 13, and only after the music stand limit switch 4 at the closing limit position of the music stand 3 is triggered and kept, the key cover motor 13 can drive the front key cover 1 to close so as to avoid damaging equipment.
In a preferred embodiment, a PWM control circuit is provided in the control device 7. With the structure, the key cover motor 13 and the music stand motor 6 are controlled in a frequency conversion and voltage conversion mode to obtain low rotating speed and large torque.
In a preferred scheme, the key cover motor 13 and the music stand motor 6 are torque motors. The torque motor is a special motor with soft mechanical characteristics and a wide speed regulation range, and has the characteristics of low rotating speed, large torque, strong overload capacity, fast response, good characteristic linearity, small torque fluctuation and the like. The output shaft of the torque motor outputs power not at constant power but at constant torque. In this case, a dc torque motor is preferably used.
As shown in fig. 1 and 2, a control switch 8 is further provided, and the control switch 8 is electrically connected to the control device 7 by wireless or wire. In this example, the control switch 8 is provided with an on button and an off button, respectively.
With the above structure, when in use, the power supply 9 is switched on, and the power supply 9 in this example is alternating current or a storage battery. When the control switch 8 presses or dials the front key cover control button, the control switch 8 sends a control signal to the control device 7, and the wireless transmitting and receiving device is commonly used in the prior art. After the control device 7 receives the control signal, the singlechip of the control device 7 controls the movement of the key cover motor 13 to drive the front key cover 1 to open, the front key cover 1 is completely opened to touch the key cover limit switch 11, and after the control device 7 receives the signal of the key cover limit switch 11, the control device controls the movement of the music stand motor 6 to drive the music stand 3 to open until the music stand 3 touches the music stand limit switch 4. Thereby completing the entire opening action.
When a closing button is pressed, the control device 7 receives a control signal, the control device 7 controls the action of the music stand motor 6 through the single chip microcomputer to drive the music stand 3 to close, and the music stand 3 touches the music stand limit switch 4 after closing. After the control device 7 receives the signal of the music stand limit switch 4, the singlechip of the control device 7 controls the action of the key cover motor 13 to drive the front key cover 1 to close, the front key cover 1 is completely closed, the key cover limit switch 11 is touched, and the control device 7 stops operating. By modifying the arrangement, the opening and closing of the front fallboard 1 and the music rack 3 can be controlled individually.
The above embodiments are only preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the embodiments and features in the embodiments in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. I.e., equivalent alterations and modifications within the scope of the invention, are also intended to be covered by the scope of this invention.
Claims (2)
1. The utility model provides an automatic music stand and fallboard that open and shut of integral type, includes preceding fallboard (1), is equipped with the pivot on preceding fallboard (1), and preceding fallboard (1) is connected characterized by through fallboard bearing frame (10) on pivot and the musical instrument body (14): a pivot is arranged on the music stand (3), and the music stand (3) is connected with a music stand bearing seat (2) on the front key cover (1) through the pivot;
a pivot of the front key cover (1) is connected with a worm wheel of a key cover worm wheel and worm mechanism (12), and a key cover motor (13) is connected with a worm of the key cover worm wheel and worm mechanism (12);
the pivot of the music stand (3) is connected with the worm wheel of the music stand worm gear mechanism (5), the music stand motor (6) is connected with the worm of the music stand worm gear mechanism (5), the key cover motor (13) and the music stand motor (6) lose power, and the positions of the front key cover (1) and the music stand (3) can be continuously kept;
a key cover limit switch (11) is arranged at the rotation limit position of the front key cover (1);
a music stand limit switch (4) is arranged at the rotation limit position of the music stand (3);
the key cover motor (13), the music stand motor (6), the key cover limit switch (11) and the music stand limit switch (4) are electrically connected with the control device (7);
a normally open contact is arranged on a key cover limit switch (11) at the opening limit position of the front key cover (1), the normally open contact is connected in series in an opening control circuit of the music stand motor (6), and the music stand motor (6) can drive the music stand (3) to open only after the key cover limit switch (11) at the opening limit position of the current key cover (1) is triggered and kept;
a normally open contact is arranged on a music stand limit switch (4) at the closing limit position of the music stand (3), the normally open contact is connected in series in a closing control circuit of a key cover motor (13), and the key cover motor (13) can drive the front key cover (1) to close only when the music stand limit switch (4) at the closing limit position of the music stand (3) is triggered and kept;
the control device (7) adopts a singlechip control device;
a PWM control circuit is arranged in the control device (7);
the key cover motor (13) and the music stand motor (6) are torque motors and output power at constant torque.
2. The integrated automatic opening and closing music stand and key cover according to claim 1, wherein: and a control switch (8) is also arranged, and the control switch (8) is electrically connected with the control device (7) through wireless or wired connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610253760.2A CN105741827B (en) | 2016-04-22 | 2016-04-22 | Integrated automatic opening and closing music stand and key cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610253760.2A CN105741827B (en) | 2016-04-22 | 2016-04-22 | Integrated automatic opening and closing music stand and key cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105741827A CN105741827A (en) | 2016-07-06 |
| CN105741827B true CN105741827B (en) | 2023-04-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610253760.2A Active CN105741827B (en) | 2016-04-22 | 2016-04-22 | Integrated automatic opening and closing music stand and key cover |
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| Country | Link |
|---|---|
| CN (1) | CN105741827B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109636760B (en) * | 2018-12-21 | 2020-12-01 | 瓦纳卡(北京)科技有限公司 | Mode switching system for heat insulation plate |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09190184A (en) * | 1996-01-09 | 1997-07-22 | Kawai Musical Instr Mfg Co Ltd | Electronic keyboard musical instrument pseudo-action |
| CN2621328Y (en) * | 2003-06-06 | 2004-06-23 | 浙江友谊电子有限公司（China） | Buffer device for keyboard cover of piano |
| CN2798239Y (en) * | 2005-03-01 | 2006-07-19 | 云南昆船第二机械有限公司 | Slow descending device for piano keyboard cover |
| CN102129855A (en) * | 2010-01-12 | 2011-07-20 | 康佳集团股份有限公司 | Piano and device for controlling rotation of piano cover |
| CN102194446A (en) * | 2010-03-03 | 2011-09-21 | 康佳集团股份有限公司 | Device for controlling rotation of piano cover and piano |
| CN102642796A (en) * | 2012-04-28 | 2012-08-22 | 王本涛 | Automatic overturning device for maintenance operation of cylinder cover |
| CN102867504A (en) * | 2011-07-07 | 2013-01-09 | 雅马哈株式会社 | Lid opening/closing mechanism for keyboard musical instrument |
| CN205541898U (en) * | 2016-04-22 | 2016-08-31 | 宜昌金宝乐器制造有限公司 | Automatic music stand and key lid of opening and shutting of integral type |
-
2016
- 2016-04-22 CN CN201610253760.2A patent/CN105741827B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09190184A (en) * | 1996-01-09 | 1997-07-22 | Kawai Musical Instr Mfg Co Ltd | Electronic keyboard musical instrument pseudo-action |
| CN2621328Y (en) * | 2003-06-06 | 2004-06-23 | 浙江友谊电子有限公司（China） | Buffer device for keyboard cover of piano |
| CN2798239Y (en) * | 2005-03-01 | 2006-07-19 | 云南昆船第二机械有限公司 | Slow descending device for piano keyboard cover |
| CN102129855A (en) * | 2010-01-12 | 2011-07-20 | 康佳集团股份有限公司 | Piano and device for controlling rotation of piano cover |
| CN102194446A (en) * | 2010-03-03 | 2011-09-21 | 康佳集团股份有限公司 | Device for controlling rotation of piano cover and piano |
| CN102867504A (en) * | 2011-07-07 | 2013-01-09 | 雅马哈株式会社 | Lid opening/closing mechanism for keyboard musical instrument |
| CN102642796A (en) * | 2012-04-28 | 2012-08-22 | 王本涛 | Automatic overturning device for maintenance operation of cylinder cover |
| CN205541898U (en) * | 2016-04-22 | 2016-08-31 | 宜昌金宝乐器制造有限公司 | Automatic music stand and key lid of opening and shutting of integral type |
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| Publication number | Publication date |
|---|---|
| CN105741827A (en) | 2016-07-06 |
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