CN107146595B - Multifunctional electric piano teaching device - Google Patents

Abstract

The invention discloses a multifunctional electric piano teaching device which comprises an electric piano body, wherein keys are arranged on the upper part of the electric piano body, a rectangular groove is formed in the bottom surface of the electric piano body, and a bottom cover is arranged at the bottom of the electric piano body; a support mechanism is arranged in the rectangular groove, and comprises a transverse rotating shaft, a front support leg and a rear support leg, wherein the transverse rotating shaft is rotatably arranged at the left end and the right end of the rectangular groove; the middle of the outer surface of the transverse rotating shaft is provided with gear teeth, the top of the rectangular groove is provided with a driving motor, an output shaft of the driving motor is provided with a gear matched with the gear teeth, and the front side surface of the electric piano body is provided with a control switch for controlling the driving motor to be opened and closed. The invention has simple and compact structure, and the piano teachers can carry out piano teaching anywhere without extra carrying or preparing piano supports and seats in advance.

Description

A multifunctional electric piano teaching device

technical field

The invention relates to the technical field of piano teaching equipment, in particular to a multifunctional electric piano teaching device.

Background technique

The piano is known as the "king of musical instruments". It consists of 88 keys (52 white keys, 36 black keys) and a metal soundboard. It was invented by Italian Bartolomeo Christopheri in 1709. of. The range of the piano range is from A2 (27.5Hz) to c5 (4186Hz), covering almost all the tones in the musical system, and it is the instrument with the widest range except the pipe organ. The piano is generally used for solo, ensemble, accompaniment and other performances, and it is very convenient to compose and rehearse music. By pressing the keys on the keyboard, the player pulls the felt-covered mallet inside the piano, and then strikes the steel strings to make the sound. However, due to the high cost and difficulty of maintenance, the piano was unbearable for ordinary families. For this reason, the electric piano emerged in the 1960s and 1970s. The sounding principle of the electric piano is to use the keyboard as an on-off switch to form electrophoresis. Once the key is pressed, the internal crystal oscillator starts to work, forming a pulse to generate a waveform of a certain frequency, which is then amplified by the frequency divider and sent to the speaker for sound.

Although electric pianos are more and more popular among music lovers due to their small size, portability and low cost, piano teachers need to carry electric pianos with them when teaching students, or carry electric piano stands or prepare them in advance. The shelf of the electric piano is convenient for teaching music to students, especially the piano teacher needs to carry a seat when lecturing outdoors, which brings great inconvenience to the electric piano teacher.

The utility model patent with the patent publication number CN 204834028 U discloses an intelligent electric piano for practice, which includes an electric piano body, and the electric piano keyboard on the electric piano body includes a plurality of keys, a digital MIDI interface and a sound box. A circuit board is installed under the keyboard of the electric piano, and the circuit board is provided with LED indicators, and a light-transmitting strip hole is opened in the middle of each key, and each LED indicator is located in the light-transmitting strip in the middle of each key. In the hole, the root of the electric piano keyboard is provided with a digital display module base plate, the digital display module base plate is provided with a digital display module corresponding to each key on the electric piano keyboard, and each digital display module is connected with the circuit board, The electric piano body is provided with a host, which is respectively connected with the circuit board, the display screen and the sound box. The utility model uses a digital display module and an LED indicator arranged on the keys to prompt the player for the key positions and techniques, so that the player can quickly learn and practice the piano. However, the utility model has the following shortcomings: the piano When teaching students, teachers need to carry an electric piano stand or prepare a shelf for placing the electric piano in advance to facilitate teaching students music, especially when piano teachers need to carry a seat when they teach outdoors. Chair, which brought great inconvenience to the electric piano teacher.

The utility model patent with the patent publication number CN 204791643U discloses a teaching electric piano. It includes a monitoring host, a teacher's piano, a video monitoring station, a host camera, a host audio, a student's electric piano, a student's camera, an earphone, a learning platform and a pickup device. The teacher's piano is provided with a monitoring host, a monitoring host and a video monitoring station. , The host camera is connected with the host audio, and the monitoring host is also connected with the student's electric piano through the learning platform. The student's electric piano is provided with a student's camera, earphones and a pickup device. The utility model can facilitate teachers to teach piano to a plurality of students, the teaching is convenient and reliable, the teaching efficiency is greatly improved, and the training cost is reduced. However, the utility model still has the problem that when teaching students, the piano teacher needs to carry the electric piano and also carry the electric piano stand or prepare a shelf for placing the electric piano in advance in order to facilitate the teaching of music to the students, especially the piano teacher needs It is necessary to carry a seat when teaching outdoors, which brings great inconvenience to the electric piano teacher.

Therefore, there is an urgent need to design a new electric piano teaching device to solve the problem of inconvenience for piano teachers to carry when teaching, especially when teaching outdoors.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to aim at the deficiencies of the prior art, to provide a multifunctional electric piano teaching device, which not only has a simple and compact structure, but also can be used in any piano teacher without additional carrying or preparation of piano brackets and seats in advance. Local piano teaching.

To achieve the above object, the present invention adopts the following technical solutions:

A multifunctional electric piano teaching device, comprising an electric piano body, the upper part of the electric piano body is provided with keys, the bottom surface of the electric piano body is provided with a rectangular groove, and the bottoms of the front and rear sides of the rectangular groove are provided with dovetails along the length direction. a groove, a bottom cover is provided at the bottom of the electric piano body, and a dovetail tenon matched with the dovetail groove is provided on the upper part of the bottom cover;

A support mechanism is arranged in the rectangular groove, and the support mechanism includes a lateral rotating shaft rotatably arranged at the left and right ends of the rectangular groove, a front leg arranged on the front side of the lower part of the lateral rotating shaft, and a lower part of the lateral rotating shaft. The rear outriggers on the rear side, the front outriggers and the rear outriggers are both retractable outriggers;

U-shaped grooves are arranged symmetrically on the left and right sides of the lower surface of the bottom cover, U-shaped support feet are rotatably arranged in the U-shaped groove, and a fixing plate is provided on the lower surface of the bottom cover and beside the outer end of the U-shaped groove , a pin hole is set on the fixing plate, a socket is set on the U-shaped leg corresponding to the position of the pin hole, and the U-shaped leg and the fixing plate are arranged in the pin hole through the passage. the pin is fixed;

Gear teeth are arranged in the middle of the outer surface of the lateral rotating shaft, a driving motor is arranged on the top of the rectangular groove, a gear matched with the gear teeth is arranged on the output shaft of the driving motor, and a control switch is arranged on the front side of the electric piano body It is used to control the opening and closing of the drive motor.

Further, the top of the rectangular groove is provided with a support leg seat with an arc-shaped groove on the lower surface for placing the front support leg or the rear support leg, and the upper surface of the bottom cover is matched with the support leg seat. The pressing block with an arc-shaped groove on the upper surface is used for pressing the front leg or the rear leg into the arc-shaped groove on the leg base.

Further, the U-shaped legs are provided with threaded holes, the threaded holes are threadedly connected with screws, and the U-shaped legs and the U-shaped grooves are fixed by the screws.

Further, a connecting rod is arranged between the front leg and the rear leg at the same end of the rectangular groove.

Further, blind threaded holes are provided on the lower end surfaces of the front legs and the rear legs, a receiving seat matched with the shape of the base is provided in the rectangular groove for accommodating the base, and the upper part of the base is provided with The threaded post matched with the threaded blind hole is used for dismounting the base in the threaded blind hole.

Further, hanging rings are provided on both the left and right end surfaces of the electric piano body, and a strap is arranged in the hanging rings.

Further, a key cover is rotatably arranged on the upper part of the electric piano body and above the keys.

The beneficial effects of the present invention are:

Aiming at the problem that in the current electric piano teaching process, the piano teacher needs to carry or prepare the piano bracket and seat in advance to teach the piano, the present invention provides a multifunctional electric piano teaching device, which includes an electric piano body, and is installed in the electric piano. The upper part of the body is provided with keys, the bottom surface of the electric piano body is provided with a rectangular groove, and the bottom of the rectangular groove is provided with a dovetail groove along the length direction, and a bottom cover is provided at the bottom of the electric piano body. The dovetail tenon matched with the groove is very convenient for the disassembly of the bottom cover and the electric piano body. At the same time, in order to facilitate the erection of the electric piano during teaching, a support mechanism is provided in the rectangular groove, and the support mechanism includes a lateral rotating shaft that is rotated and arranged at the left and right ends of the rectangular groove, and a front leg arranged on the front side of the lower part of the lateral rotating shaft. and the rear legs arranged on the lower rear side of the lateral shaft, so that when necessary, you only need to remove the bottom cover first, and then turn the front and rear legs out of the rectangular groove, and in order to facilitate adjustment The height of the front and rear outriggers, both the front and rear outriggers are retractable outriggers. In addition, in order to facilitate the piano teacher to sit down and teach the electric piano during the lecture, U-shaped grooves are arranged symmetrically on the left and right sides of the lower surface of the bottom cover, and U-shaped feet are rotated in the U-shaped groove. In addition, a fixing plate is arranged beside the outer end of the U-shaped groove to prevent the U-shaped feet from freely rotating outward after being lowered and thus losing the supporting function of the U-shaped feet; When the piano body is unstable, a pin hole is set on the fixed plate, a jack is set on the U-shaped foot corresponding to the position of the pin hole, and the pin arranged in the pin hole is passed between the U-shaped foot and the fixed plate. fixed. In addition, in order to realize the automatic falling and retracting of the front and rear outriggers, gear teeth are arranged in the middle of the outer surface of the lateral shaft, a drive motor is arranged on the top of the rectangular groove, and the output shaft of the drive motor is arranged with the gear teeth. Matching gears, and a control switch is arranged on the front side of the electric piano body to control the opening and closing of the drive motor. The present invention not only has a simple and compact structure, but also enables piano teachers to teach piano anywhere without additionally carrying or preparing piano brackets and seats in advance.

Description of drawings

FIG. 1 is a schematic front view of the structure of the first embodiment of the present invention;

2 is a schematic left view of the structure of the first embodiment of the present invention;

3 is a schematic top view of the structure of the first embodiment of the present invention;

Fig. 4 is A-A direction structural representation in Fig. 1;

5 is a schematic structural front view of a second embodiment of the present invention;

6 is a schematic left view of the structure of the second embodiment of the present invention;

7 is a schematic top view of the structure of the second embodiment of the present invention;

Fig. 8 is a schematic view of the structure in the direction B-B in Fig. 5;

FIG. 9 is a schematic structural front view of a third embodiment of the present invention;

10 is a schematic top view of the structure of the third embodiment of the present invention;

Figure 11 is a schematic view of the structure in the direction C-C in Figure 9;

12 is a schematic front view of the structure of the fourth embodiment of the present invention;

13 is a schematic front view of the structure of the fifth embodiment of the present invention;

FIG. 14 is a schematic left view of the structure of the fifth embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of the present invention.

Example 1:

As shown in Figures 1 to 4, a multifunctional electric piano teaching device comprises an electric piano body 1, the upper part of the electric piano body 1 is provided with keys 2, the bottom surface of the electric piano body 1 is provided with a rectangular groove 3, the rectangular The bottoms of the front and rear sides of the groove 3 are provided with dovetail grooves 4 along the length direction, the bottom of the electric piano body 1 is provided with a bottom cover 5 , and the upper part of the bottom cover 5 is provided with a dovetail tenon 6 matched with the dovetail groove 4 .

A support mechanism is arranged in the rectangular groove 3, and the support mechanism includes a lateral rotating shaft 7 rotatably arranged at the left and right ends of the rectangular groove 3, a front leg 8 disposed on the front side of the lower part of the lateral rotating shaft 7, and a The rear legs 9 on the rear side of the lower part of the lateral rotating shaft 7, the front legs 8 and the rear legs 9 are telescopic legs.

U-shaped grooves 10 are arranged symmetrically on the left and right sides of the lower surface of the bottom cover 5 , and U-shaped support feet 11 are rotatably arranged in the U-shaped groove 10 . The lower surface of the bottom cover 5 is located in the U-shaped groove 10 . A fixing plate 12 is arranged beside the outer end, a pin hole 13 is formed on the fixing plate 12, an insertion hole 14 is formed on the U-shaped leg 11 corresponding to the position of the pin hole 13, and the U-shaped leg 11 and the The fixing plates 12 are fixed by pins 15 arranged in the pin holes 13 .

Gear teeth 16 are arranged in the middle of the outer surface of the lateral rotating shaft 7, and a driving motor 17 is arranged on the top of the rectangular groove 3. The output shaft of the driving motor 17 is arranged with a gear 18 matched with the gear teeth 16. A control switch 19 is provided on the front side of the piano body 1 for controlling the opening and closing of the driving motor 17 .

In this embodiment, keys are arranged on the upper part of the electric piano body, a rectangular groove is arranged on the bottom surface of the electric piano body, and dovetail grooves are opened along the length direction at the bottom of the front and rear sides of the rectangular groove, and a bottom cover is arranged at the bottom of the electric piano body , a dovetail tenon that matches the dovetail groove is arranged on the upper part of the bottom cover, which is very convenient for the disassembly of the bottom cover and the electric piano body.

At the same time, in order to facilitate the erection of the electric piano during teaching, a support mechanism is provided in the rectangular groove, and the support mechanism includes a lateral rotating shaft that is rotated and arranged at the left and right ends of the rectangular groove, and a front leg arranged on the front side of the lower part of the lateral rotating shaft. and the rear legs arranged on the lower rear side of the lateral shaft, so that when necessary, you only need to remove the bottom cover first, and then turn the front and rear legs out of the rectangular groove, and in order to facilitate adjustment The height of the front and rear outriggers, both the front and rear outriggers are retractable outriggers.

In addition, in order to facilitate the piano teacher to sit down and teach the electric piano during the lecture, U-shaped grooves are arranged symmetrically on the left and right sides of the lower surface of the bottom cover, and U-shaped feet are rotated in the U-shaped groove. In addition, a fixing plate is arranged beside the outer end of the U-shaped groove to prevent the U-shaped feet from freely rotating outward after being lowered and thus losing the supporting function of the U-shaped feet; When the piano body is unstable, a pin hole is set on the fixed plate, a jack is set on the U-shaped foot corresponding to the position of the pin hole, and the pin arranged in the pin hole is passed between the U-shaped foot and the fixed plate. fixed.

In addition, in order to realize the automatic falling and retracting of the front and rear outriggers, gear teeth are arranged in the middle of the outer surface of the lateral shaft, a drive motor is arranged on the top of the rectangular groove, and the output shaft of the drive motor is arranged with the gear teeth. Matching gears, and a control switch is arranged on the front side of the electric piano body to control the opening and closing of the drive motor. The present invention not only has a simple and compact structure, but also enables piano teachers to teach piano anywhere without additionally carrying or preparing piano brackets and seats in advance.

Example 2:

As shown in Figures 5 to 8, a multifunctional electric piano teaching device includes an electric piano body 1, the upper part of the electric piano body 1 is provided with keys 2, the bottom surface of the electric piano body 1 is provided with a rectangular groove 3, the rectangular The bottoms of the front and rear sides of the groove 3 are provided with dovetail grooves 4 along the length direction, the bottom of the electric piano body 1 is provided with a bottom cover 5 , and the upper part of the bottom cover 5 is provided with a dovetail tenon 6 matched with the dovetail groove 4 .

A support mechanism is arranged in the rectangular groove 3, and the support mechanism includes a lateral rotating shaft 7 rotatably arranged at the left and right ends of the rectangular groove 3, a front leg 8 disposed on the front side of the lower part of the lateral rotating shaft 7, and a The rear legs 9 on the rear side of the lower part of the lateral rotating shaft 7, the front legs 8 and the rear legs 9 are telescopic legs.

U-shaped grooves 10 are arranged symmetrically on the left and right sides of the lower surface of the bottom cover 5 , and U-shaped support feet 11 are rotatably arranged in the U-shaped groove 10 . The lower surface of the bottom cover 5 is located in the U-shaped groove 10 . A fixing plate 12 is arranged beside the outer end, a pin hole 13 is formed on the fixing plate 12, an insertion hole 14 is formed on the U-shaped leg 11 corresponding to the position of the pin hole 13, and the U-shaped leg 11 and the The fixing plates 12 are fixed by pins 15 arranged in the pin holes 13 .

Gear teeth 16 are arranged in the middle of the outer surface of the lateral rotating shaft 7, and a driving motor 17 is arranged on the top of the rectangular groove 3. The output shaft of the driving motor 17 is arranged with a gear 18 matched with the gear teeth 16. A control switch 19 is provided on the front side of the piano body 1 for controlling the opening and closing of the driving motor 17 .

The top of the rectangular groove 3 is provided with a leg seat 20 with an arc-shaped groove on the lower surface for placing the front leg 8 or the rear leg 9. The upper surface of the bottom cover 5 is connected to the leg seat 20. The matching pressing block 21 with an arc-shaped groove on the upper surface is used to press the front leg 8 or the rear leg 9 into the arc-shaped groove on the leg base 20 .

In this embodiment, in order to prevent the front leg and the rear leg from shaking in the rectangular groove during transportation and carrying, a leg seat with an arc-shaped groove on the lower surface is provided on the top of the rectangular groove for placing the front leg or the rear leg. The upper surface of the bottom cover is provided with an arc-shaped groove, and a pressing block with an arc-shaped groove on the upper surface of the bottom cover is used for pressing the front leg or the rear leg into the arc-shaped groove on the leg base.

Example 3:

As shown in Figure 9-11, the difference from Example 2 is:

The U-shaped legs 11 are provided with threaded holes, and the screws 22 are threaded in the threaded holes, and the U-shaped legs 11 and the U-shaped grooves 10 are fixed by the screws 22 .

A connecting rod 23 is arranged between the front leg 8 and the rear leg 9 at the same end of the rectangular groove 3 .

In this embodiment, in order to facilitate the fixing of the U-shaped legs in the non-use state, threaded holes are provided on the U-shaped legs, and screws are threadedly connected in the threaded holes, so that the U-shaped legs can be fixed in the U-shaped groove by screws. . In addition, in order to increase the rigidity of the front outrigger and the rear outrigger and avoid deformation, a connecting rod is arranged between the front outrigger and the rear outrigger at the same end of the rectangular groove.

Example 4:

As shown in FIG. 12 , the difference from Embodiment 3 is that threaded blind holes 24 are provided on the lower end surfaces of the front legs 8 and the rear legs 9 , and the rectangular groove 3 is provided with a shape similar to that of the base 25 . The matching accommodating seat 26 is used for accommodating the base 25 , and the upper part of the base 25 is provided with a threaded post 27 matched with the threaded blind hole 24 for detachably disposing the base 25 in the threaded blind hole 24 Inside.

In this embodiment, in order to make the front outrigger and the rear outrigger more stable and firm when they fall to support the electric piano body, threaded blind holes are arranged on the lower end surfaces of the front outrigger and the rear outrigger, and the rectangular grooves are arranged in the shape of the base. The matching accommodating seat is used for accommodating the base, and a threaded column matched with the threaded blind hole is arranged on the upper part of the base, so that the base can be detachably arranged in the threaded blind hole.

Example 5:

As shown in FIG. 13 and FIG. 14 , the difference from Embodiment 3 is that hanging rings 28 are provided on the left and right end surfaces of the electric piano body 1 , and straps 29 are provided in the hanging rings 28 .

A key cover 30 is rotatably disposed on the upper part of the electric piano body 1 and above the keys 2 .

In this embodiment, in order to facilitate portability, hanging rings are provided on the left and right end surfaces of the electric piano body, and a strap is provided in the hanging rings. In addition, in order to avoid damaging the keys in a non-use state and preventing dust from falling, a key cover is rotatably provided on the upper part of the electric piano body and above the keys.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention, as long as they do not depart from the spirit of the technical solutions of the present invention and The scope should be included in the scope of the claims of the present invention.

Claims (5)

1. The utility model provides a multi-functional fender teaching device, includes the fender body, fender body upper portion sets up key, its characterized in that: the bottom surface of the electric piano body is provided with a rectangular groove, the bottoms of the front side edge and the rear side edge of the rectangular groove are provided with dovetail grooves along the length direction, the bottom of the electric piano body is provided with a bottom cover, and the upper part of the bottom cover is provided with a dovetail joint matched with the dovetail grooves;

a support mechanism is arranged in the rectangular groove, the support mechanism comprises a transverse rotating shaft which is rotatably arranged at the left end and the right end of the rectangular groove, a front support leg which is arranged at the front side of the lower part of the transverse rotating shaft and a rear support leg which is arranged at the rear side of the lower part of the transverse rotating shaft, and the front support leg and the rear support leg are telescopic support legs;

the left side and the right side of the lower surface of the bottom cover are symmetrically provided with U-shaped grooves, U-shaped support legs are rotationally arranged in the U-shaped grooves, fixing plates are arranged on the lower surface of the bottom cover and beside the outer ends of the U-shaped grooves, pin holes are formed in the fixing plates, insertion holes are formed in the positions, corresponding to the pin holes, of the U-shaped support legs, and the U-shaped support legs and the fixing plates are fixed through pins arranged in the pin holes;

gear teeth are arranged in the middle of the outer surface of the transverse rotating shaft, a driving motor is arranged at the top of the rectangular groove, a gear matched with the gear teeth is arranged on an output shaft of the driving motor, and a control switch is arranged on the front side surface of the electric piano body and used for controlling the driving motor to be switched on and switched off;

a leg seat with an arc-shaped groove on the lower surface is arranged at the top of the rectangular groove and used for placing the front leg or the rear leg, and a pressing block with an arc-shaped groove on the upper surface, matched with the leg seat, on the upper surface of the bottom cover is used for pressing the front leg or the rear leg in the arc-shaped groove on the leg seat;

threaded holes are formed in the U-shaped supporting legs, screws are connected in the threaded holes in a threaded mode, and the U-shaped supporting legs and the U-shaped grooves are fixed through the screws.

2. A multi-functional electric piano teaching device according to claim 1, wherein: and a connecting rod is arranged between the front supporting leg and the rear supporting leg at the same end of the rectangular groove.

3. A multi-functional electric piano teaching device according to claim 1, wherein: preceding landing leg with terminal surface all sets up the screw thread blind hole under the back landing leg, set up in the rectangle recess and hold the seat with base shape matched with and be used for holding the base, base upper portion set up with screw thread blind hole matched with screw thread post is used for with the base is detachable to be set up in the screw thread blind hole.

4. A multi-functional electric piano teaching device according to claim 1, wherein: both ends face all sets up the link about the fender body, set up the braces in the link.

5. A multi-functional electric piano teaching device according to claim 1, wherein: the upper portion of the electric piano body is located above the keys and is rotatably provided with a key cover.

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