CN209912467U - Adjustable piano keyboard - Google Patents

Abstract

The utility model relates to the technical field of musical instruments, and discloses an adjustable piano keyboard, comprising a main body, a front surface of the main body is provided with a plurality of sound broadcasting holes, and the front surface of the main body is located at the position of the plurality of sound broadcasting holes. An operation screen is fixed directly below, a connecting block is fixed on one side of the host, a keyboard is fixed on the side of the connecting block away from the host, a storage cylinder is arranged on one side of the host, and the outer side of the storage cylinder is fixed. There is an inlet and outlet on the surface; by setting a storage cylinder on one side of the host, the rewinding shaft is rotated and connected inside the storage cylinder. At the same time, the outer surface of the winding shaft is symmetrically fixed with a spring, and one end of the keyboard passes through the inlet and outlet and is wound around the reeling shaft. On the outer surface of the keyboard, when rewinding, the rewinding force of the two springs can drive the rotation of the reeling shaft, and through the rotation of the reeling shaft, the rewinding of the keyboard can be completed, and the rewinding is completed at the same time. Afterwards, the keyboard is not prone to looseness.

Description

An adjustable piano keyboard

technical field

The utility model relates to the technical field of musical instruments, in particular to an adjustable piano keyboard.

Background technique

With the gradual improvement of the quality of life, people pay more and more attention to spiritual entertainment, and music is one of the most commonly used spiritual entertainment items in people's daily life and work. As the most common musical instrument, it is widely used in music performance. Because the melody played by the piano is more pleasant, more and more people are learning the piano. Assisted learning.

However, the existing technology still has the following problems:

(1) The traditional piano keyboard is cumbersome and its length cannot be adjusted. Therefore, there is a hand-rolled piano keyboard on the market, so that the keyboard can play music like a traditional keyboard, and at the same time, it can be adjusted by hand. However, when the keyboard is rolled up, it is cumbersome to manually roll up the keyboard, and at the same time, the keyboard is easy to loosen when carrying, thus occupying a lot of space.

(2) The piano keyboards on the market are generally powered by charging and discharging operations, but when in use, the power is likely to be insufficient, so that it is impossible to continue to play through the piano keyboard, which is inconvenient for users to use.

Utility model content

(1) Technical problems solved

Aiming at the deficiencies of the prior art, the utility model provides an adjustable piano keyboard, which solves the problem that the piano keyboards on the market are cumbersome when being rolled up, and are easy to loosen when carried at the same time, and are easy to be played when playing. There is an issue where the battery is low enough to just play through the keyboard.

(2) Technical solutions

In order to achieve the above-mentioned purpose, the present utility model provides the following technical solutions: an adjustable piano keyboard, comprising a main body, the front surface of the main body is provided with a plurality of sound broadcasting holes, and the front surface of the main body is located in a plurality of the sound broadcasting holes. An operation screen is fixed directly below the main unit, a connection block is fixed on one side of the main unit, a keyboard is fixed on the side of the connection block away from the main unit, and a storage cylinder is arranged on one side of the main unit. An inlet and outlet are provided on the outer surface, and a rewinding shaft is rotatably connected to the inside of the storage cylinder. The end of the keyboard away from the connecting block is wound around the outer surface of the reeling shaft through the inlet and outlet. A spring is symmetrically fixed on the outer surface of the keyboard along the horizontal center line of the keyboard.

Preferably, one end of the clockwork spring is fixedly connected to the outer surface of the winding shaft, and the other end of the clockwork spring is fixedly connected to the inner surface of the receiving cylinder.

Preferably, bearings are fixed at the center of the top of the inner surface and the bottom of the inner surface of the receiving cylinder, and the top and bottom ends of the reeling shaft are respectively penetrated inside the two bearings.

Preferably, a placement box is fixed on the top of the storage cylinder, a ratchet wheel is rotatably connected to the inside of the storage cylinder, and the top end of the winding shaft penetrates the storage cylinder and the placement box and is welded and fixed to the lower surface of the ratchet wheel, so The inside of the placing box is located below the ratchet wheel and is rotatably connected with a rotating column, the outer surface of the rotating column is fixed with a claw, the upper surface of the placing box is rotatably connected with a knob, and the top of the rotating column is connected to the The bottom of the knob is fixedly attached.

Preferably, a battery slot is opened on the rear surface of the host, and a rotating shaft is fixed on the rear surface of the host at the bottom of the battery slot, and a slot cover is rotatably connected to the rear surface of the host through the rotating shaft. A locking block is fixed at the bottom of the front surface of the slot cover, and a locking slot is formed above the battery slot on the rear surface of the host, and the locking block corresponds to the locking slot.

Preferably, a rubber gasket is fixed on the inner surface of the card slot.

(3) Beneficial effects

The utility model provides an adjustable piano keyboard, which has the following beneficial effects:

(1) In the present invention, a receiving cylinder is arranged on one side of the host, and the reeling shaft is rotatably connected inside the receiving cylinder. At the same time, the outer surface of the reeling shaft is symmetrically fixed with a clockwork spring, and one end of the keyboard passes through the inlet and outlet and is wound around the reeling shaft. On the outer surface of the reel, when rewinding, the rewinding force of the two springs can drive the rotation of the reel, and through the rotation of the reel, the rewinding of the keyboard can be completed at the same time. After finishing, the keyboard is not prone to loosening.

(2) The utility model is provided with a battery slot on the rear surface of the main engine, and the rear surface of the main engine is located at the bottom of the battery slot to connect the slot cover by rotating the shaft. A plurality of dry batteries are installed in the middle, and through the plurality of dry batteries, the keyboard can continue to be powered, so that the user can continue to play through the keyboard and avoid too much influence on the use of the user.

Description of drawings

Fig. 1 is the structural representation of the utility model;

2 is a schematic diagram of the internal structure of the storage cylinder in the utility model;

Fig. 3 is the internal structure schematic diagram of the placing box in the utility model;

FIG. 4 is a schematic diagram of the rear view of the main unit in the present invention.

In the figure: 1. Main unit; 2. Operation screen; 3. Audio hole; 4. Connecting block; 5. Keyboard; 6. Placing box; 7. Knob; 8. Storage cylinder; , mainspring; 12, rewinding shaft; 13, ratchet; 14, claw; 15, rotating column; 16, card slot; 17, rubber gasket; 18, battery slot; 19, rotating shaft; 20, slot cover; 21 , card block.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figures 1-4, the present utility model provides a technical solution: an adjustable piano keyboard, comprising a main unit 1, a plurality of sound broadcasting holes 3 are opened on the front surface of the main unit 1, and the front surface of the main unit 1 is located in a plurality of The operation screen 2 is fixed directly under the sounding hole 3, the connecting block 4 is fixed on one side of the host 1, the keyboard 5 is fixed on the side of the connecting block 4 away from the host 1, and the storage cylinder 8 is arranged on one side of the host 1. The outer surface of 8 is provided with an inlet and outlet 9, and the interior of the storage cylinder 8 is rotatably connected with a rewinding shaft 12. One end of the keyboard 5 away from the connecting block 4 passes through the inlet and outlet 9 and is wound on the outer surface of the reeling shaft 12. The surface is symmetrically fixed with a clockwork spring 11 along the horizontal center line of the keyboard 5. When the keyboard 5 is wound, the rewinding shaft 12 can be driven to rotate by the resilience of the two clockwork springs 11. Through the rotation of the winding shaft 12, At the same time, because the keyboard 5 is made of ABS flexible composite material, the keyboard 5 can be rolled up, avoiding the cumbersome and inconvenient traditional manual rolling method, and at the same time, the keyboard 5 will not be loose after the rolling is completed.

Further, one end of the clockwork spring 11 is fixedly connected to the outer surface of the winding shaft 12, and the other end of the clockwork spring 11 is fixedly connected to the inner surface of the receiving cylinder 8. Through the resilience of the two clockwork springs 11, the The rewinding shaft 12 is driven to rotate, and the keyboard 5 is automatically reeled. At the same time, when rewinding, the spring 11 has a force point.

Further, bearings 10 are fixed at the top of the inner surface and the center of the bottom of the inner surface of the receiving cylinder 8 , and the top and bottom ends of the rewinding shaft 12 are respectively connected to the inside of the two bearings 10 . 12 rotates more smoothly, to avoid excessive wear between the reeling shaft 12 and the storage cylinder 8, resulting in the situation that the reeling shaft 12 does not rotate smoothly during rotation.

Further, a placement box 6 is fixed on the top of the storage cylinder 8, a ratchet wheel 13 is rotatably connected to the inside of the storage cylinder 6, and the top of the winding shaft 12 penetrates the storage cylinder 8 and the placement box 6 and the lower surface of the ratchet wheel 13 is welded and fixed, and the placement box 6 is welded and fixed. The inner part is located below the ratchet wheel 13 and is rotatably connected with a rotating column 15, the outer surface of the rotating column 15 is fixed with a claw 14, the upper surface of the placing box 6 is rotatably connected with a knob 7, and the top of the rotating column 15 is fixedly connected with the bottom of the knob 7. , by turning the knob 7, the rotation of the claw 14 can be driven. When the keyboard 5 is rolled up, the knob 7 is rotated to make the claw 14 and the teeth on the ratchet 13 disengage from each other, so that the winding shaft 12 can be reeled to complete the keyboard. 5, when in use, turn the knob 7 to make the claw 14 fit with the teeth on the ratchet 13, so as to prevent the winding shaft 12 from rotating under the action of the spring 11, and then When the keyboard 5 is rolled up.

Further, the rear surface of the host 1 is provided with a battery slot 18, and the rear surface of the host 1 is located at the bottom of the battery slot 18 and is fixed with a rotating shaft 19, and the rear surface of the host 1 is rotated through the rotating shaft 19. A card block 21 is fixed at the bottom of the front surface, and a card slot 16 is opened above the battery slot 18 on the rear surface of the host 1. The card block 21 corresponds to the card slot 16. When the power of the battery inside the host 1 is insufficient, you can Install a plurality of dry batteries inside the battery slot 18 to continue to supply power to the keyboard 5, and close the slot cover 20 through the engagement between the card block 21 and the card slot 16, so that you can continue to play through the keyboard 5, avoiding It has a great impact on the user's use.

Further, a rubber gasket 17 is fixed on the inner surface of the card slot 16. The friction force between the card slot 16 and the card block 21 can be increased through the rubber gasket 17, and the card block 21 can be fixed in the card groove 16 more firmly. , to further close the slot cover 20 more tightly.

To sum up, the work flow of the present utility model: when the keyboard 5 is reeled, the rewinding shaft 12 can be driven to rotate by the resilience of the two springs 11. 5 bits are made of ABS flexible composite material, so the keyboard 5 can be rolled up, avoiding the cumbersome and inconvenient traditional manual winding method. At the same time, after the winding is completed, the keyboard 5 will not be loose. At the same time, by turning the knob 7. It can drive the rotation of the claws 14. When the keyboard 5 is rolled up, the knob 7 is rotated to make the claws 14 and the teeth on the ratchet 13 disengage from each other, so that the reel 12 can be automatically retracted to the keyboard 5. When in use, turn the knob 7 to make the pawl 14 fit with the teeth on the ratchet 13, so as to prevent the winding shaft 12 from rotating under the action of the spring 11, and then the keyboard 5 is rotated. In the case of winding, when the power of the battery inside the host 1 is insufficient, multiple dry batteries can be installed in the battery slot 18 to continue to supply power to the keyboard 5, and the slot cover 20 can be passed between the card block 21 and the card slot 16. The latching effect between the two is closed, so that the keyboard 5 can be used to continue to play, so as to avoid too much influence on the use of the user.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. An adjustable piano keyboard comprises a main machine (1), and is characterized in that: a plurality of sound holes (3) are formed in the front surface of the host (1), an operation screen (2) is fixed on the front surface of the host (1) under the sound holes (3), a connecting block (4) is fixed on one side of the main machine (1), a keyboard (5) is fixed on one side of the connecting block (4) far away from the main machine (1), one side of the main machine (1) is provided with a storage barrel (8), the outer surface of the storage barrel (8) is provided with an inlet and an outlet (9), and the interior of the receiving cylinder (8) is rotatably connected with a winding shaft (12), one end of the keyboard (5) far away from the connecting block (4) passes through the inlet and outlet (9) and is wound on the outer surface of the winding shaft (12), and a clockwork spring (11) is symmetrically fixed on the outer surface of the winding shaft (12) along the horizontal center line of the keyboard (5).

2. An adjustable piano keyboard according to claim 1, wherein: one end of the clockwork spring (11) is fixedly connected with the outer surface of the winding shaft (12), and the other end of the clockwork spring (11) is fixedly connected with the inner surface of the storage barrel (8).

3. An adjustable piano keyboard according to claim 1, wherein: bearings (10) are fixed at the centers of the top of the inner surface and the bottom of the inner surface of the storage barrel (8), and the top end and the bottom end of the winding shaft (12) are respectively connected inside the two bearings (10) in a penetrating mode.

4. An adjustable piano keyboard according to claim 1, wherein: the top of storage barrel (8) is fixed with places box (6), the inside rotation of placing box (6) is connected with ratchet (13), the top of rolling axle (12) is run through storage barrel (8) with place box (6) with the lower surface welded fastening of ratchet (13), the inside of placing box (6) is located the below of ratchet (13) is rotated and is connected with and rotates post (15), the fixed surface that rotates post (15) has jack catch (14), the upper surface rotation of placing box (6) is connected with knob (7), the top of rotating post (15) with the bottom fixed connection of knob (7).

5. An adjustable piano keyboard according to claim 1, wherein: the rear surface of the host (1) is provided with a battery jar (18), the rear surface of the host (1) is located at the bottom of the battery jar (18) and is fixedly provided with a rotating shaft (19), the rear surface of the host (1) is rotatably connected with a groove cover (20) through the rotating shaft (19), the bottom of the front surface of the groove cover (20) is fixedly provided with a clamping block (21), the upper portion of the battery jar (18) is located at the rear surface of the host (1) and is provided with a clamping groove (16), and the clamping block (21) corresponds to the clamping groove (16).

6. An adjustable piano keyboard according to claim 5, wherein: and a rubber gasket (17) is fixed on the inner surface of the clamping groove (16).

Images