KR20190088629A - Digital Piano Keyboard Structure - Google Patents

Abstract

The present invention provides a technique which improves assembly and precision of a digital piano, and improves stability, touch feel, and durability of a keyboard. According to an embodiment of the present invention, a hybrid keyboard structure for a digital keyboard instrument comprises: a frame having an accommodation space of a uniform size, allowing keys to be accommodated in the accommodation space at regular intervals, and including a hammer insertion protrusion allowing a hammer to be inserted and coupled to an area of the accommodation space and a limiting unit formed on an area to limit a left and a right movement when pressing the keys; the keys rotatably installed on the frame to be touched by a performer to realize a sound, and provided with a limit protrusion unit protruding downwards from an area thereof to be inserted into the limit unit when pressed to limit a left and a right movement when pressed; a touch sensor which is installed on an area of a lower portion of the keys, has three protrusion units excluding an outer wall, and realizes a sound by bringing a contact unit arranged on a printed circuit board installed on an area of the frame and one or more among the three protrusion units into contact with each other by rotation of the keys and the frame when pressing the keys; and a hammer which is bent in multiple stages in a prescribed length to have a prescribed inclination angle to slide and come in contact with the keys, is rotatably connected to the frame by pressing the keys, has a heavy weight unit to be pressed and rotate in a state of applying a load to the keys when the keys are pressed, and returns to an original position by the heavy weight unit when the keys are released.

Description

[0001] The present invention relates to a hybrid key structure for a digital keyboard instrument,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard for a digital piano, and more particularly to a keyboard for a digital piano, in which a touch sensor at the time of touch of a keyboard is improved to improve the stability, touch feeling, durability and playability of the keyboard, A keyboard for a digital piano.

For acoustic instruments, a digital instrument that digitizes and implements the sound has been developed and is now becoming popular. Of these, digital pianos, which play electronic sounds instead of direct string sounds, are widely used for keyboard musical instruments.

In the case of a guitar stick piano, a hammer generates a sound with a sound generated when a string is struck as a key is pressed, but a digital piano stores an electronic sound corresponding to a keyboard on a circuit, So that a sound is generated as it is connected to the contact point of the printed circuit board mounted on the printed circuit board.

Since the sound is digitally generated by the sensing, the digital piano can generate not only the piano sound but also the sound of the other musical instrument. Therefore, the digital piano is very general, and its size is very small compared with the acoustic grand piano, And is popularly used for playing and learning.

However, in the case of a digital piano, it has been pointed out that the sense of touch and the sense of restoration are not as good as those of an acoustic piano. That is, in the case of an acoustic piano, there is a unique touch feeling due to the interaction of the hammer, the damper and the string when the key is pressed. Such a touch feeling of the piano is considered to be one of important factors in performance.

However, in the case of a digital piano, since a sound is digitally generated in accordance with sensing of a contact with a contact point with a board as described above, it is basically unnecessary to apply a hammer and a damper, and the pressing force of the acoustic piano and the keyboard The difference in resistance between the acoustic piano and the acoustic piano is very different from that of the acoustic piano.

However, the touch feeling of the acoustic piano is very important in the performance as described above. Recently, it is pointed out that there is a need for a technique to have a touch feeling similar to an acoustic piano in a digital piano.

Accordingly, in Korean Utility Model Application No. 20-2008-0004880 and Korean Patent No. 10-1594887, a touch feeling that can be felt in an acoustic piano in a digital piano is realized through a rotation structure between a hammer and a keyboard and a frame I am posting the technology for.

However, even with the above-described conventional techniques, it is impossible to realize the touch sensing and the sound according to the delicate and various playing methods of the keyboard which can be implemented in the acoustic piano. Thus, although the touch feeling is improved, There was a problem. Also, it has been pointed out that it is very difficult to separate the keyboard, and it is difficult to maintain the keyboard and the printed circuit board inside the frame.

In addition, in order to produce the external shape of the digital piano, the outer shape is conventionally manufactured by using a large mold, and then the piano is manufactured from the digital piano manufacturing site. Therefore, The problem of time consumption has been pointed out.

 SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a musical instrument capable of improving the stability, touch feeling and durability of a keyboard, The present invention has been made to solve the above problems.

In addition, the present invention can maximize the easiness of manufacturing a key frame for accommodating a frame of a keyboard to form an outer surface of a digital piano and enable precise assembly, thereby improving the productivity of the digital piano and maximizing the stability of the digital piano There are other purposes to improve the.

It is another object of the present invention to provide a technique that facilitates the separation of the keyboard and facilitates maintenance on the keyboard.

It is another object of the present invention to provide a technique for providing a natural touch feeling and a sense of touch according to depression of a keyboard, and a key structure having improved stability and durability.

 In order to accomplish the above object, a hybrid keyboard structure for a digital keyboard musical instrument according to an embodiment of the present invention includes: a keyboard having a uniform size accommodation space, A hammer fitting protrusion which can be engaged with a hammer in one area of the accommodating space and a restricting part formed in one area and restricting movement of the keyboard in the leftward and rightward direction when the keyboard is pressed; And a restricting protrusion protruded downwardly so as to be pivotally mounted on the frame so as to realize sound by being touched by a player and to be inserted into the restricting portion when the keyboard is pressed in one area, keyboard; A contact portion disposed on a printed circuit board provided in one area of the frame in accordance with the rotation of the keyboard and the frame when the keyboard is pressed; A touch sensor provided to enable at least one of the three protrusions to contact to implement a sound; A plurality of bending portions formed in a predetermined length so as to have a predetermined angle of inclination and being slidably contacted with the keyboard while being slidably engaged with the keyboard while pivotally connected to the frame in response to the depression of the keyboard and having a weight portion to apply a load to the keyboard And a hammer which is rotated to return to the home position by the weight when the key is released from being released.

According to the present invention, it is possible to implement a finer and more detailed playing method than a conventional sound implementation of a digital piano through a touch sensor having three protrusions and a printed circuit board that implements sounds according to contact with the sensor. In other words, since the number of the three projecting portions arranged in the longitudinal direction of the keyboard varies depending on the number of contact of the printed circuit board with the contact portion in accordance with the rotation of the keyboard, different intensities can be realized by the processor In addition, it is possible to control so that various colors of sound can be realized.

In addition, since the keyboard can be detached from the pin, which is a pivoting axis with respect to the frame, the body and the fastening portion of the keyboard can be attached and detached to replace only the body when the body of the keyboard is damaged, , The maintenance of the digital piano is very easy.

On the other hand, when the side of the keyboard is made of wood and the frame is made of synthetic resin, the touch feeling of the keyboard is natural and warm, and the frame is stable and durable.

1 is a side cross-sectional view of a hybrid keyboard structure for a digital keyboard musical instrument according to an embodiment of the present invention;
2 is a side view and a bottom view of a keyboard according to an embodiment of the present invention;
FIG. 3 is a specific view of the area A in FIG. 2; FIG.
4 is a partial configuration example of an elastic switch according to an embodiment of the present invention.
5 is a top view and side view of a hammer according to one embodiment of the present invention.
6 is a perspective view of a harbor cap in accordance with one embodiment of the present invention.
FIG. 7 is an overall plan view and front view of a keyboard of a digital piano according to one embodiment of the present invention; FIG.

Hereinafter, a hybrid key structure for a digital keyboard musical instrument according to an embodiment of the present invention will be described with reference to the accompanying drawings.

The following examples are intended to illustrate the present invention and should not be construed as limiting the scope of the present invention. Accordingly, an equivalent invention performing the same function as the present invention is also within the scope of the present invention.

In addition, in adding reference numerals to the constituent elements of the drawings, it is to be noted that the same constituent elements are denoted by the same reference numerals even though they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

In addition, in order to clearly illustrate the technical features of the present invention, the components shown in the following drawings are added, omitted, reduced, and enlarged in order to clearly illustrate the technical features of the present invention. You will not be able to.

FIG. 2 is a side view and a bottom view of a keyboard according to an embodiment of the present invention, and FIG. 3 is a side view and a bottom view of a keyboard according to an embodiment of the present invention. FIG. 5 is a plan view and a side view of a hammer according to an embodiment of the present invention, and FIG. 6 is a plan view and a side view of a hammer according to an embodiment of the present invention. FIG. 7 is a plan view and a front view showing a keyboard of a digital piano according to an embodiment of the present invention, and FIG. 8 is a view for explaining a part of a back surface of a digital piano according to an embodiment of the present invention . DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention.

Referring to FIG. 1, a hybrid keyboard structure for a digital keyboard musical instrument according to an embodiment of the present invention includes a frame 100, a keyboard 200, a touch sensor 300, and a hammer 400 .

7, the frame 100 has a receiving space 110 having a uniform size as shown in FIG. 7, and the receiving space 110 is formed in the receiving space 110, And a hammer insertion protrusion 120 is formed in one portion of the accommodation space 110 so that the hammer 400 can be engaged with the hammer insertion protrusion 120. In one area, (Not shown) that restricts the lateral movement of the keyboard 200 when the keyboard 200 is pressed.

The limitation in the present invention means, for example, the appearance of the frame 100 for accurately accommodating a white key and a black key (quiet and semitone keys) of the keys constituting the digital piano, It may mean a configuration in which the protrusion 202 is accommodated.

The frame 100 can also be understood as a skeleton that is meant to mean an overall frame provided to assemble each configuration including the keyboard 200, the hammer 400 and the printed circuit board member 330 constituting the digital piano. have. In the present invention, the frame 100 may be made of a synthetic resin material to ensure stability and durability.

Although the hammer-insertion protrusion 120 is shown in FIG. 1 as an internal construction, it can be understood that the hammer-insertion protrusion 120 is a structure in which the rotation coupling portion 430 of the hammer 400 shown in FIG. 5 is inserted. That is, the hammer fitting protrusion 120 means a projecting recessed fitting structure formed in a region where the hammer 400 is rotatably engaged with the frame 100 by the pivotal engagement portion 430 ≪ / RTI >

8, the frame 100 according to the present invention is installed in the key frame 101 so that the keyboard 200 and the frame 100 are positioned at a height that the user can touch while the user is sitting on the chair . That is, in the present invention, the key frame 101 forms the external shape of the digital piano, and at the same time, the above-described frame 100 is installed on the upper part of the key frame 101 so that the keyboard 200 provided on the frame 100 It is to be understood that the present invention is not limited to the above embodiments and various modifications may be made without departing from the scope of the present invention.

Such a key frame 101 is usually manufactured through a mold, which must be manufactured to have a very large external shape due to the size of the digital piano. In this case, there is a problem that the manufacturing cost of the mold and the time and cost required for carrying the outer shape of the key frame 101 are greatly increased.

In order to solve such a problem, the key frame 101 of the present invention is configured such that a plurality of sub-key frame units 1011, 1012, 1013 are arranged in the negative direction of the keyboard (In the longitudinal direction of the first housing 130).

At this time, referring to the coupling area B between the sub-keyframe units 1011, 1012, 1013, sub-keyframe units 1011, 1012, 1013 are provided for rigid and precise coupling between sub- , 1013 may include a unit coupling unit for coupling between adjacent sub-key frame units 1011, 1012, 1013. [

Specifically, the unit coupling unit is configured as one set for each of the sub-key frame units 1011, 1012, and 1013 as shown in Fig. 9 that embodies the C area of Fig. 8, 1013 and 1013 and is formed so as to protrude from the sub-key frame units 1011, 1012 and 1013 and has a width d1 in the direction protruding from the sub-key frame units 1011, 1012 and 1013 Lt; RTI ID = 0.0 > 1012 < / RTI >

Correspondingly, the unit engaging portion is also provided at the same position as the fitting protrusion 10112 on the other end side opposite to one end side of the left and right end side sub-key frame units 1011, 1012, 1013 where the fitting protrusion 10112 is formed, 1012, and 1013 in a shape corresponding to the fitting protrusion 10112 so as to be fitted to the sub-key frame units 1011, 1012, and 1013, respectively.

Specifically, the sub-key frame units 1011, 1012, and 1013 are configured such that the configuration of the lines 10111 and 10121 including unit coupling portions as shown in FIG. 9 is such that the sub key frame units 1011, The units 1011, 1012, and 1013 may be made of a material different from that of the main body. For example, the sub-key frame units 1011, 1012, and 1013 may be made of wood and the lines 10111 and 10121 may be made of a synthetic resin material. The materials of the lines 10111 and 10121 are formed so as to be accurately and precisely fixedly engaged when the components of the fitting protrusion 10112 and the fitting groove 10122 formed in the lines 10111 and 10121 are fitted to each other Any material will be possible.

For example, the sub-key frame units 1011, 1012, and 1013 are formed to have a constant thickness. In this case, the thickness of the lines 10111 and 10121 is equal to or greater than that of the sub-key frame units 1011, 1012, 1012 and 1013 can be more precisely and stably engaged by further increasing the fitting force between the fitting protrusion 10112 and the fitting groove 10122 .

9, the width of the fitting groove 10122 and the fitting protrusion 10112 are changed from d1 to d2 as shown in Fig. 9. At this time, the width of the fitting protrusion 10112 is made larger than that of the fitting groove 10122 And the fitting protrusion 10112 is configured to be tightly coupled to the fitting groove 10122, so that the coupling force can be further increased.

When the key frame 101 is formed through the combination of the sub-key frame units 1011, 1012, and 1013, the key frame 101 is integrally molded so that inconvenience in transportation can be completely eliminated. That is, the number of the sub-keyframe units 1011, 1012, and 1013 is determined so as to receive the size of the keyboard, and the sub-keyframe units 1011, 1012, and 1013 having relatively small sizes are easily transported and combined at the production site As a result, the assemblability is greatly improved and the coupling precision is greatly improved, thereby saving the manufacturing cost and time of the digital piano.

Meanwhile, the keyboard 200 is rotatably installed on the frame 100 so as to be able to implement sound by being touched and pressed by the player, and is inserted into the above-mentioned restricting portion when the keyboard 200 is pressed, The above-mentioned limiting protrusion 202 protruding downward so as to be limited.

In the following description, the keyboard 200 will be described with reference to a white key of a still note as shown in FIG. 1, and a black key 210 implementing a half tone also has a slight difference in configuration and size from the keyboard 200 , And the configuration for implementing the functions and effects of the present invention will be adopted in the same manner, and a description thereof will be omitted.

1 and 2, the keyboard 200 is configured such that the limiting protrusion 202 is formed at the bottom (that is, downward or in the depressing direction) And a finishing unit 205 formed on one side of the body to determine the external shape of the keyboard 200. [

The supporting area 410 of the hammer 400 formed on one side of the pivotal coupling part 430 of the hammer 400 with respect to the frame 100 is formed in one area of the keyboard 200, And a hammer pressing part 206 for applying a turning force to rotate the hammer 400 about the pivotal engaging part 430 by a pressing force against the keyboard 200. As shown in FIG.

The other end of the keyboard 200 is connected to the body 201 so that the key 200 can be separated from the main body 201. The key 200 is provided with a pin And a fastening part 203 having a fastening part 204 to be engaged with the fastening part 130.

Particularly, in the present invention, the entire side or outer surface of the body 201 or the keyboard 200 is made of a wood material, so that a warm touch feeling when touching and a natural touch feeling can be formed.

In the present invention, the pin 130 is formed to be long in a direction orthogonal to the longitudinal direction of the keyboard 200, that is, in the above-mentioned scales, and is inserted and installed by being guided by the pin fastening portion of the frame 100, The engaging portion 203 of the plurality of keys 200 and 210 is engaged with the engaging portion 204 so that the engaging portion 204 engages with the engaging portion 204 of the key 200, . In this case, the pin 130 may be formed as an integral bar and may be implemented as a single pin as a whole of the frame 100, or may include a plurality of groups of pins arranged to be detachably inserted into each key 200 Can be understood.

The hammer pressing part 206 is shown in FIG. 2 and performs a function of imparting a turning force (pressing force) to the hammer 400 substantially as described above. At this time, the turning force can be given to rotate the hammer 400 in a direction opposite to the rotating direction of the keyboard 200, by virtue of the pivoting axis arrangement relationship and the pressing force direction relationship between the keyboard 200 and the hammer 400. [

The hammer 400 is slidably brought into contact with the support area 410 of the hammer 400 to apply a rotational force to the hammer 400 to implement the natural pressing of the keyboard 200, And the keyboard 200 are slid along the contact point moved in accordance with the relative rotation.

6, the support area 410 of the hammer 400 is provided with a hammer 400 (not shown) to surround the support area 410 to prevent the support area 410 and the hammer presser part 206 from being worn, And a hammer cap 440 that is coupled to the end side of the support region 410 side of the support member 410. 6, a certain cavity is formed in the hammer cap 440 so that the hammer pressing part 206 can be received from the outside through the space.

The touch sensor 300 is formed in one area of the lower part of the keyboard 200 with three protrusions 320 except for the outer wall 310 and is disposed in one area of the frame 100 when the keyboard 200 is pressed The key 200 and the frame 100 are pressed against each other when the key 200 is pressed by sensing the contact while the contact portion (not shown) disposed on the printed circuit board 330 and the protrusion 320 are in contact with each other, One or more of the three contact portions and the three protrusions 320 are brought into contact with each other according to the rotation of the contact portion and the sound is generated according to the detection result.

3, the protrusion 320 is composed of three portions 321, 322, and 323, and the touch sensor 300 includes a protrusion 320, And an outer wall 310 to guide stable and precise contact of the gradually increasing and decreasing portion with the inner wall 320.

The keyboard 200 is rotated downward with the pin 130 as a rotation axis in accordance with the depression of the keyboard 200 and the contact portion contacts the protrusion 320 in the order of the protrusions 323, 322, (Not shown), and the processor identifies the key 200 in which the contact is sensed by using the identification information of the contact portion in which the contact is sensed, ) Of the sound output from the sound output device.

1 to 3, the touch sensor 300 is configured such that three protrusions 320 are arranged in the longitudinal direction of the keyboard 200, so that when the keyboard 200 is pressed, According to the angle (pivoting distance), as described above, the strength of the sound can be adjusted by the processor according to the number of the protrusions 320 contacting the contact portion.

That is, in the present invention, the key 200 can be perceived as delicate pressing. When the player presses the keyboard strongly or strongly, the pivotal distance of the keyboard 200 will also be increased, so that all of the three protrusions 320 will contact the corresponding portions of the protrusions 320. On the other hand, if the player presses the keyboard lightly, the pivotal distance of the keyboard 200 will also decrease, so that only portions 323 and 322 of the three protrusions 320 will contact the corresponding portions of the protrusions .

As described above, the number of the protruding portions 320 contacting the contact portion will be changed according to the performance method of the player. This is because the player performs playing such as bouncing the key on the acoustic piano, playing the performance of finely adjusting the intensity, And the number of the protrusions 320 that are contacted in all possible cases in a very delicate performance, and broadcasts the number of the protrusions 320 to the processor.

On the other hand, in order to provide a richer and more versatile sound while providing the same sound as an actual acoustic piano, the processor is configured to generate a resonance sound, a current resonance sound, And outputting at least one of the sounds through the output device.

That is, the processor stores a sound realized in an actual acoustic piano with respect to a corresponding sound according to each sound, and a resonance sound, a current resonance sound or a hammer sound is stored as the sound, and when the contact is detected, The corresponding effect sound described above can be loaded and output together with the actual sound.

When the keyboard 200 is depressed, the keyboard 200 is made to have a repulsive elasticity so that the touch of the keyboard 200 becomes the same as the touch of the acoustic piano. In order to accurately sense the touch of the acoustic piano 200, Can be installed.

The elastic switch 340 is installed to be coupled to either the touch sensor 300 or the contact part so as to be disposed between the touch sensor 300 and the contact part. When the contact part touches the contact part, A contact protrusion formed on a body corresponding to the protrusion 320 of the surface contacting the contact portion is formed.

4, the elastic switch 340 may be configured such that the protrusion region 342 protrudes while receiving the protrusion 320, and the contact protrusion 341 is formed on the back surface of the contact surface with the protrusion 320 And may be configured to be in contact with the contact portion when pressed. 4 shows the contact protrusion 341 formed on the protruding region 342 in the form shown in order to explain the position of the contact protrusion 341. In reality, Lt; / RTI >

Through the structure of the elastic switch 340, when the elastic switch 340 is depressed when the keyboard 200 is pressed, the contact protrusions 341 are pressed together by the protrusions 320, At the same time, the elastic force of the elastic switch 340 imparts the pressing force and the repulsive force of the opposite echo to the keyboard 200, thereby achieving an effect of improving touch feeling at the same time.

As shown in FIG. 1, the frame 100 may include the elastic portions 140 and 160 in order to realize a new movement balance with a feature that can be felt on a real grand piano key while enhancing the touch feeling. The elastic part 140 is made of an elastic material and is installed so as to be repulsive against the pressing force of the keyboard 200 while being in contact with the keyboard 200 when the keyboard 200 is pressed. Thus, the keyboard 200 is designed to feel a certain pivoting distance when it is pressed very lightly. As shown in FIG. 1, the elastic portions 140 and 160 may be implemented in two or more different regions, respectively, so as to function for each of the white and black keys 200 and 210, or to function simultaneously on one key Can be implemented.

1 and 5, the hammer 400 is bent in a predetermined length so as to have a predetermined angle of inclination, and is slidably contacted with the hammer pressing part 206 of the keyboard 200, And is connected to the pivotal connection portion 430 so as to be rotatable with respect to the frame 100 in accordance with the depression of the key 100. The weight portion 420 is pivoted to apply a load to the keyboard 200 while being pressed upon depression of the keyboard And is returned to the original position by the weight 420 when the key 200 is released.

1 and 5, it is preferable that the weight 420 is formed in a direction opposite to the hammer pressing part 206, that is, the supporting area 410, with the rotation coupling part 430 as a center Do.

Meanwhile, in order to reflect the feel of the actual acoustic piano and the feel of the hammer, the weight 420 of each hammer 400 may have different weights depending on the sound in the bass part and the treble part.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them.

It is also to be understood that the terms such as " comprises, " " comprising, " or " having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (12)

A hammer fitting protrusion having a receiving space of a uniform size and adapted to receive the keyboard at a predetermined interval in the receiving space, the hammer fitting protrusion being capable of being fitted to the hammer in one region of the receiving space, A frame having a restricting portion for restricting the lateral movement thereof;
And a restricting protrusion protruded downwardly so as to be pivotally mounted on the frame so as to realize sound by being touched by a player and to be inserted into the restricting portion when the keyboard is pressed in one area, keyboard;
A contact portion disposed on a printed circuit board provided in one area of the frame in accordance with the rotation of the keyboard and the frame when the keyboard is pressed; A touch sensor provided to enable at least one of the three protrusions to contact to implement a sound; And
And is tilted by a predetermined length so as to have a predetermined inclination angle so as to be slidably in contact with the keyboard while being pivotally connected to the frame in accordance with the depression of the keyboard, and has a weight portion, thereby rotating in a state of applying a load to the keyboard And a hammer formed to be returned to the home position by the weight when the key is released from the depression of the key. The method according to claim 1,
And a key frame provided so that the frame is installed,
Wherein the key frame comprises:
A plurality of sub-key frame units, each of which is provided with a frame in which a predetermined number of keys and a predetermined number of keys are accommodated, are arranged and combined with each other in the negative direction of the keyboard,
Wherein the sub-
And a unit coupling portion for coupling between adjacent sub-key frame units,
Wherein:
A fitting protrusion formed on one side of left and right end sides of the sub-key frame unit and protruding from the sub-key frame unit, the fitting protrusion being formed to increase its width in a direction protruding from the sub-key frame unit; And
The sub key frame unit is recessed in a direction corresponding to the fitting projection so as to be fitted into the fitting projection at the same position as the fitting projection on the other end side opposite to the one end side of the left and right end sides of the sub- And a fitting groove formed in the fitting groove. The method according to claim 1,
Wherein the touch sensor is disposed on one of the touch sensor and the contact unit so as to be disposed between the touch sensor and the contact unit, and a contact surface, which is in contact with the contact unit, Further comprising a resilient switch having contact protrusions formed at positions corresponding to the protrusions of the key panel. The method according to claim 1,
The touch sensor includes:
The three protrusions are arranged in the longitudinal direction of the keyboard so that the sound intensity is adjusted differently by the processor depending on the number of the protrusions contacting the contact portion in accordance with the rotation angle of the keyboard when the keyboard is depressed And a second key structure for a digital keyboard musical instrument. The method according to claim 1,
The frame includes:
And a resilient portion protruding from a side of the frame opposite to the pivoting axis with respect to the keyboard and being resiliently resiliently urged against a pressing force of the keyboard while being in contact with the keyboard when the keyboard is pressed. Hybrid keyboard structure. The method according to claim 1,
The keyboard includes:
A body formed in the longitudinal direction so as to be inserted into the accommodation space when the limiting protrusion is formed on the bottom portion and depressed;
A hammer which is protrudingly formed on a bottom portion of one region and which is formed so as to be in sliding contact with a supporting region formed on one side of the pivotal engagement portion of the hammer with the frame, A pressing part; And
And a fastening portion provided to be detachable from the body and having a fastening portion for fastening to a pin provided on a pin fastening portion of the frame. The method according to claim 6,
The pin
Wherein the plurality of keys are formed to be elongated in a direction orthogonal to the longitudinal direction of the keyboard so as to be engaged with the fastening portions of the plurality of keys by being fitted into the pin fastening portions of the frames corresponding to the plurality of keys, Hybrid keyboard structure for. The method according to claim 6,
Wherein the weight portion is formed in a direction opposite to the hammer pressing portion about the pivotal coupling portion. The method according to claim 6,
The hammer includes:
And a hammer cap fitted to one end of the hammer so as to surround the supporting region of the hammer. The method according to claim 6,
Wherein the weight of the hammer has a different weight depending on the sound of the keyboard. The method according to claim 1,
And a processor for adding at least one of a resonance sound, a current resonance sound, and a hammer sound to a sound corresponding to the keyboard when the keyboard is depressed, and outputting the result through an output device rescue. The method according to claim 1,
Wherein a side surface of the keyboard is made of a wood material, and the frame is made of a synthetic resin material.

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